Merge branch 'arc'

author: Aleks Kissinger <aleks0@gmail.com> 2017-01-02 11:31:52 +0100
committer: Aleks Kissinger <aleks0@gmail.com> 2017-01-02 11:31:52 +0100
commit: ff79a9c213dfd75ea00ed5112d3a6e314601e064 (patch)
tree: 19ecef47bf11803fc4fc59e06c185c65aa7fdd19 /tikzit
parent: 9e4f8a6ff37161da4fa0af14604ad22d9c212fde (diff)
parent: 49c0d2041f0aae6d08d325b7f7fc1cd707d942f8 (diff)
68 files changed, 3670 insertions, 8388 deletions
diff --git a/tikzit/.gitignore b/tikzit/.gitignore
index 644b16b..fc1d580 100644
--- a/tikzit/.gitignore
+++ b/tikzit/.gitignore
@@ -1,3 +1,5 @@
+# Previous gitignore items
+
 *~
 *.swp
 *.o
@@ -27,3 +29,207 @@ Makefile.in
 /tikzit-*.tar.gz
 /tikzit-*.tar.bz2
 xbuild
+
+#########################
+# .gitignore file for Xcode4 and Xcode5 Source projects
+#
+# Apple bugs, waiting for Apple to fix/respond:
+#
+#    15564624 - what does the xccheckout file in Xcode5 do? Where's the documentation?
+#
+# Version 2.3
+# For latest version, see: http://stackoverflow.com/questions/49478/git-ignore-file-for-xcode-projects
+#
+# 2014 updates:
+# - appended non-standard items DISABLED by default (uncomment if you use those tools)
+# - removed the edit that an SO.com moderator made without bothering to ask me
+# - researched CocoaPods .lock more carefully, thanks to Gokhan Celiker
+# 2013 updates:
+# - fixed the broken "save personal Schemes"
+# - added line-by-line explanations for EVERYTHING (some were missing)
+#
+# NB: if you are storing "built" products, this WILL NOT WORK,
+# and you should use a different .gitignore (or none at all)
+# This file is for SOURCE projects, where there are many extra
+# files that we want to exclude
+#
+#########################
+
+#####
+# OS X temporary files that should never be committed
+#
+# c.f. http://www.westwind.com/reference/os-x/invisibles.html
+
+.DS_Store
+.Trashes
+*.swp
+
+#
+# *.lock - this is used and abused by many editors for many different things.
+#    For the main ones I use (e.g. Eclipse), it should be excluded 
+#    from source-control, but YMMV.
+#   (lock files are usually local-only file-synchronization on the local FS that should NOT go in git)
+# c.f. the "OPTIONAL" section at bottom though, for tool-specific variations!
+
+*.lock
+
+
+#
+# profile - REMOVED temporarily (on double-checking, I can't find it in OS X docs?)
+#profile
+
+
+####
+# Xcode temporary files that should never be committed
+# 
+# NB: NIB/XIB files still exist even on Storyboard projects, so we want this...
+
+*~.nib
+
+
+####
+# Xcode build files -
+#
+# NB: slash on the end, so we only remove the FOLDER, not any files that were badly named "DerivedData"
+
+DerivedData/
+
+# NB: slash on the end, so we only remove the FOLDER, not any files that were badly named "build"
+
+build/
+
+
+#####
+# Xcode private settings (window sizes, bookmarks, breakpoints, custom executables, smart groups)
+#
+# This is complicated:
+#
+# SOMETIMES you need to put this file in version control.
+# Apple designed it poorly - if you use "custom executables", they are
+#  saved in this file.
+# 99% of projects do NOT use those, so they do NOT want to version control this file.
+#  ..but if you're in the 1%, comment out the line "*.pbxuser"
+
+# .pbxuser: http://lists.apple.com/archives/xcode-users/2004/Jan/msg00193.html
+
+*.pbxuser
+
+# .mode1v3: http://lists.apple.com/archives/xcode-users/2007/Oct/msg00465.html
+
+*.mode1v3
+
+# .mode2v3: http://lists.apple.com/archives/xcode-users/2007/Oct/msg00465.html
+
+*.mode2v3
+
+# .perspectivev3: http://stackoverflow.com/questions/5223297/xcode-projects-what-is-a-perspectivev3-file
+
+*.perspectivev3
+
+#    NB: also, whitelist the default ones, some projects need to use these
+!default.pbxuser
+!default.mode1v3
+!default.mode2v3
+!default.perspectivev3
+
+
+####
+# Xcode 4 - semi-personal settings
+#
+#
+# OPTION 1: ---------------------------------
+#     throw away ALL personal settings (including custom schemes!
+#     - unless they are "shared")
+#
+# NB: this is exclusive with OPTION 2 below
+xcuserdata
+
+# OPTION 2: ---------------------------------
+#     get rid of ALL personal settings, but KEEP SOME OF THEM
+#     - NB: you must manually uncomment the bits you want to keep
+#
+# NB: this *requires* git v1.8.2 or above; you may need to upgrade to latest OS X,
+#    or manually install git over the top of the OS X version
+# NB: this is exclusive with OPTION 1 above
+#
+#xcuserdata/**/*
+
+#     (requires option 2 above): Personal Schemes
+#
+#!xcuserdata/**/xcschemes/*
+
+####
+# XCode 4 workspaces - more detailed
+#
+# Workspaces are important! They are a core feature of Xcode - don't exclude them :)
+#
+# Workspace layout is quite spammy. For reference:
+#
+# /(root)/
+#   /(project-name).xcodeproj/
+#     project.pbxproj
+#     /project.xcworkspace/
+#       contents.xcworkspacedata
+#       /xcuserdata/
+#         /(your name)/xcuserdatad/
+#           UserInterfaceState.xcuserstate
+#     /xcsshareddata/
+#       /xcschemes/
+#         (shared scheme name).xcscheme
+#     /xcuserdata/
+#       /(your name)/xcuserdatad/
+#         (private scheme).xcscheme
+#         xcschememanagement.plist
+#
+#
+
+####
+# Xcode 4 - Deprecated classes
+#
+# Allegedly, if you manually "deprecate" your classes, they get moved here.
+#
+# We're using source-control, so this is a "feature" that we do not want!
+
+*.moved-aside
+
+####
+# OPTIONAL: Some well-known tools that people use side-by-side with Xcode / iOS development
+#
+# NB: I'd rather not include these here, but gitignore's design is weak and doesn't allow
+#     modular gitignore: you have to put EVERYTHING in one file.
+#
+# COCOAPODS:
+#
+# c.f. http://guides.cocoapods.org/using/using-cocoapods.html#what-is-a-podfilelock
+# c.f. http://guides.cocoapods.org/using/using-cocoapods.html#should-i-ignore-the-pods-directory-in-source-control
+#
+#!Podfile.lock
+#
+# RUBY:
+#
+# c.f. http://yehudakatz.com/2010/12/16/clarifying-the-roles-of-the-gemspec-and-gemfile/
+#
+#!Gemfile.lock
+#
+# IDEA:
+#
+#.idea
+#
+# TEXTMATE:
+#
+# -- UNVERIFIED: c.f. http://stackoverflow.com/a/50283/153422
+#
+#tm_build_errors
+
+####
+# UNKNOWN: recommended by others, but I can't discover what these files are
+#
+# Community suggestions (unverified, no evidence available - DISABLED by default)
+#
+# 1. Xcode 5 - VCS file
+#
+# "The data in this file not represent state of your project.
+# If you'll leave this file in git - you will have merge conflicts during 
+# pull your cahnges to other's repo"
+#
+#*.xccheckout
+\ No newline at end of file
diff --git a/tikzit/English.lproj/CustomNodes.xib b/tikzit/English.lproj/CustomNodes.xib
new file mode 100644
index 0000000..33f6e3a
--- /dev/null
+++ b/tikzit/English.lproj/CustomNodes.xib
@@ -0,0 +1,256 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="5053" systemVersion="13C64" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES">
+    <dependencies>
+        <deployment defaultVersion="1070" identifier="macosx"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="5053"/>
+    </dependencies>
+    <objects>
+        <customObject id="-2" userLabel="File's Owner" customClass="CustomNodeController">
+            <connections>
+                <outlet property="customNodeTable" destination="ieg-vU-MzM" id="nrO-zt-zY0"/>
+                <outlet property="graphicsView" destination="3MT-Yc-Dhv" id="9gg-fS-oBl"/>
+                <outlet property="tikzSourceController" destination="il5-cQ-3oh" id="Wny-jd-sKZ"/>
+                <outlet property="view" destination="1" id="sH5-DU-xwB"/>
+            </connections>
+        </customObject>
+        <customObject id="-1" userLabel="First Responder" customClass="FirstResponder"/>
+        <customObject id="-3" userLabel="Application"/>
+        <arrayController objectClassName="NodeStyle" id="iyU-U5-XAU" userLabel="Node Style Array Controller">
+            <declaredKeys>
+                <string>name</string>
+                <string>strokeThickness</string>
+                <string>strokeColor</string>
+                <string>fillColor</string>
+                <string>strokeColorIsKnown</string>
+                <string>fillColorIsKnown</string>
+                <string>representedObject.name</string>
+                <string>shapeName</string>
+                <string>scale</string>
+                <string>@distinctUnionOfObjects.category</string>
+                <string>category</string>
+            </declaredKeys>
+            <connections>
+                <binding destination="-2" name="contentArray" keyPath="customNodeStyles" id="eXd-NF-dvR"/>
+            </connections>
+        </arrayController>
+        <customObject id="il5-cQ-3oh" customClass="TikzSourceController">
+            <connections>
+                <outlet property="errorMessage" destination="6rJ-4b-syy" id="cin-Wb-6uD"/>
+                <outlet property="errorNotification" destination="R3k-mz-hMn" id="jtn-fQ-Amk"/>
+                <outlet property="graphicsView" destination="3MT-Yc-Dhv" id="hK1-h1-Dsr"/>
+                <outlet property="sourceView" destination="QXu-0d-uF0" id="SEj-FL-5Ac"/>
+                <outlet property="status" destination="6rJ-4b-syy" id="lVN-cK-3Cb"/>
+            </connections>
+        </customObject>
+        <customView id="1">
+            <rect key="frame" x="0.0" y="0.0" width="480" height="272"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+            <subviews>
+                <splitView dividerStyle="thin" vertical="YES" translatesAutoresizingMaskIntoConstraints="NO" id="DO1-FS-fZd">
+                    <rect key="frame" x="0.0" y="0.0" width="480" height="272"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <subviews>
+                        <scrollView fixedFrame="YES" autohidesScrollers="YES" horizontalLineScroll="33" horizontalPageScroll="10" verticalLineScroll="33" verticalPageScroll="10" usesPredominantAxisScrolling="NO" id="Ry0-48-577">
+                            <rect key="frame" x="0.0" y="0.0" width="135" height="272"/>
+                            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                            <clipView key="contentView" id="9D3-br-lEi">
+                                <rect key="frame" x="1" y="1" width="133" height="270"/>
+                                <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                <subviews>
+                                    <tableView verticalHuggingPriority="750" allowsExpansionToolTips="YES" columnAutoresizingStyle="lastColumnOnly" columnReordering="NO" columnResizing="NO" multipleSelection="NO" autosaveColumns="NO" rowHeight="31" rowSizeStyle="automatic" viewBased="YES" id="ieg-vU-MzM">
+                                        <rect key="frame" x="0.0" y="0.0" width="133" height="270"/>
+                                        <autoresizingMask key="autoresizingMask"/>
+                                        <size key="intercellSpacing" width="3" height="2"/>
+                                        <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                                        <color key="gridColor" name="gridColor" catalog="System" colorSpace="catalog"/>
+                                        <tableColumns>
+                                            <tableColumn width="130" minWidth="40" maxWidth="1000" id="k91-pc-nbl">
+                                                <tableHeaderCell key="headerCell" lineBreakMode="truncatingTail" borderStyle="border" alignment="left">
+                                                    <font key="font" metaFont="smallSystem"/>
+                                                    <color key="textColor" name="headerTextColor" catalog="System" colorSpace="catalog"/>
+                                                    <color key="backgroundColor" white="0.33333298560000002" alpha="1" colorSpace="calibratedWhite"/>
+                                                </tableHeaderCell>
+                                                <customCell key="dataCell" alignment="left" id="iBr-Zx-inI"/>
+                                                <tableColumnResizingMask key="resizingMask" resizeWithTable="YES" userResizable="YES"/>
+                                                <prototypeCellViews>
+                                                    <tableCellView id="FFd-Cu-kI9" customClass="CustomNodeCellView">
+                                                        <rect key="frame" x="1" y="1" width="130" height="31"/>
+                                                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                                        <subviews>
+                                                            <textField verticalHuggingPriority="750" horizontalCompressionResistancePriority="250" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="ao2-4F-rlt">
+                                                                <rect key="frame" x="0.0" y="7" width="130" height="17"/>
+                                                                <autoresizingMask key="autoresizingMask" widthSizable="YES" flexibleMinY="YES"/>
+                                                                <textFieldCell key="cell" lineBreakMode="truncatingTail" sendsActionOnEndEditing="YES" title="Table View Cell" id="QkT-4g-5Qq">
+                                                                    <font key="font" metaFont="system"/>
+                                                                    <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                                                                    <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
+                                                                </textFieldCell>
+                                                            </textField>
+                                                        </subviews>
+                                                        <connections>
+                                                            <outlet property="textField" destination="ao2-4F-rlt" id="zq7-cf-ZXq"/>
+                                                        </connections>
+                                                    </tableCellView>
+                                                </prototypeCellViews>
+                                            </tableColumn>
+                                        </tableColumns>
+                                        <connections>
+                                            <binding destination="iyU-U5-XAU" name="content" keyPath="arrangedObjects" id="Sdh-7p-80z"/>
+                                            <outlet property="dataSource" destination="iyU-U5-XAU" id="t5B-c8-e0k"/>
+                                            <outlet property="delegate" destination="-2" id="M05-fU-pjz"/>
+                                        </connections>
+                                    </tableView>
+                                </subviews>
+                                <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                            </clipView>
+                            <scroller key="horizontalScroller" hidden="YES" verticalHuggingPriority="750" horizontal="YES" id="QIL-7j-JmC">
+                                <rect key="frame" x="1" y="256" width="36" height="15"/>
+                                <autoresizingMask key="autoresizingMask"/>
+                            </scroller>
+                            <scroller key="verticalScroller" hidden="YES" verticalHuggingPriority="750" horizontal="NO" id="ElP-ub-Uwa">
+                                <rect key="frame" x="-14" y="-7" width="15" height="0.0"/>
+                                <autoresizingMask key="autoresizingMask"/>
+                            </scroller>
+                        </scrollView>
+                        <view id="F5P-T2-9eB">
+                            <rect key="frame" x="136" y="0.0" width="344" height="272"/>
+                            <autoresizingMask key="autoresizingMask"/>
+                            <subviews>
+                                <splitView translatesAutoresizingMaskIntoConstraints="NO" id="KKi-SZ-dS6">
+                                    <rect key="frame" x="0.0" y="0.0" width="344" height="272"/>
+                                    <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                    <subviews>
+                                        <customView id="d61-FR-v2c">
+                                            <rect key="frame" x="0.0" y="0.0" width="344" height="156"/>
+                                            <autoresizingMask key="autoresizingMask"/>
+                                            <subviews>
+                                                <customView wantsLayer="YES" translatesAutoresizingMaskIntoConstraints="NO" id="3MT-Yc-Dhv" customClass="GraphicsView">
+                                                    <rect key="frame" x="0.0" y="0.0" width="344" height="155"/>
+                                                    <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                                </customView>
+                                                <customView wantsLayer="YES" ambiguous="YES" misplaced="YES" translatesAutoresizingMaskIntoConstraints="NO" id="R3k-mz-hMn" customClass="ParseErrorView">
+                                                    <rect key="frame" x="0.0" y="113" width="343" height="42"/>
+                                                    <autoresizingMask key="autoresizingMask" widthSizable="YES" flexibleMinY="YES"/>
+                                                    <subviews>
+                                                        <textField verticalHuggingPriority="750" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="6rJ-4b-syy">
+                                                            <rect key="frame" x="5" y="10" width="336" height="27"/>
+                                                            <autoresizingMask key="autoresizingMask" widthSizable="YES" flexibleMaxX="YES" flexibleMinY="YES"/>
+                                                            <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" allowsUndo="NO" sendsActionOnEndEditing="YES" alignment="left" placeholderString="parser information" allowsEditingTextAttributes="YES" id="3y1-Zn-Hv4">
+                                                                <font key="font" metaFont="smallSystem"/>
+                                                                <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                                                                <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                                                            </textFieldCell>
+                                                        </textField>
+                                                        <button wantsLayer="YES" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="Et8-Cc-Xac">
+                                                            <rect key="frame" x="322" y="21" width="17" height="19"/>
+                                                            <autoresizingMask key="autoresizingMask" flexibleMinX="YES" flexibleMinY="YES"/>
+                                                            <buttonCell key="cell" type="squareTextured" bezelStyle="texturedSquare" image="NSStopProgressFreestandingTemplate" imagePosition="only" alignment="center" state="on" imageScaling="proportionallyDown" id="7vB-Le-tP4">
+                                                                <behavior key="behavior" lightByBackground="YES" lightByGray="YES"/>
+                                                                <font key="font" metaFont="system"/>
+                                                            </buttonCell>
+                                                            <connections>
+                                                                <action selector="closeParseError:" target="il5-cQ-3oh" id="jdZ-7K-cwe"/>
+                                                            </connections>
+                                                        </button>
+                                                    </subviews>
+                                                </customView>
+                                            </subviews>
+                                            <constraints>
+                                                <constraint firstAttribute="bottom" secondItem="3MT-Yc-Dhv" secondAttribute="bottom" id="DEy-EJ-EeA"/>
+                                                <constraint firstItem="R3k-mz-hMn" firstAttribute="leading" secondItem="d61-FR-v2c" secondAttribute="leading" id="FDF-4e-3R4"/>
+                                                <constraint firstItem="3MT-Yc-Dhv" firstAttribute="top" secondItem="d61-FR-v2c" secondAttribute="top" constant="1" id="TXv-kR-OA6"/>
+                                                <constraint firstItem="3MT-Yc-Dhv" firstAttribute="leading" secondItem="d61-FR-v2c" secondAttribute="leading" id="TzA-tT-Vdh"/>
+                                                <constraint firstItem="R3k-mz-hMn" firstAttribute="top" secondItem="d61-FR-v2c" secondAttribute="top" constant="1" id="a7a-Y8-O1K"/>
+                                                <constraint firstAttribute="trailing" secondItem="3MT-Yc-Dhv" secondAttribute="trailing" id="tEn-7r-xa3"/>
+                                                <constraint firstAttribute="trailing" secondItem="R3k-mz-hMn" secondAttribute="trailing" constant="1" id="tpa-mG-DNu"/>
+                                            </constraints>
+                                        </customView>
+                                        <customView id="Fal-9S-dwR">
+                                            <rect key="frame" x="0.0" y="165" width="344" height="107"/>
+                                            <autoresizingMask key="autoresizingMask"/>
+                                            <subviews>
+                                                <scrollView horizontalLineScroll="10" horizontalPageScroll="10" verticalLineScroll="10" verticalPageScroll="10" hasHorizontalScroller="NO" usesPredominantAxisScrolling="NO" translatesAutoresizingMaskIntoConstraints="NO" id="yLp-gf-r49">
+                                                    <rect key="frame" x="0.0" y="0.0" width="344" height="107"/>
+                                                    <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                                    <clipView key="contentView" id="qOT-id-lqk">
+                                                        <rect key="frame" x="1" y="1" width="327" height="105"/>
+                                                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                                        <subviews>
+                                                            <textView importsGraphics="NO" richText="NO" findStyle="panel" allowsUndo="YES" usesRuler="YES" verticallyResizable="YES" allowsNonContiguousLayout="YES" spellingCorrection="YES" smartInsertDelete="YES" id="QXu-0d-uF0">
+                                                                <rect key="frame" x="0.0" y="0.0" width="327" height="105"/>
+                                                                <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                                                <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                                                                <size key="minSize" width="327" height="105"/>
+                                                                <size key="maxSize" width="877" height="10000000"/>
+                                                                <attributedString key="textStorage">
+                                                                    <fragment>
+                                                                        <string key="content">\begin{tikzpicture}
+
+\end{tikzpicture}</string>
+                                                                        <attributes>
+                                                                            <font key="NSFont" metaFont="toolTip"/>
+                                                                            <paragraphStyle key="NSParagraphStyle" alignment="natural" lineBreakMode="wordWrapping" baseWritingDirection="natural"/>
+                                                                        </attributes>
+                                                                    </fragment>
+                                                                </attributedString>
+                                                                <color key="insertionPointColor" white="0.0" alpha="1" colorSpace="calibratedWhite"/>
+                                                                <size key="minSize" width="327" height="105"/>
+                                                                <size key="maxSize" width="877" height="10000000"/>
+                                                                <connections>
+                                                                    <binding destination="il5-cQ-3oh" name="attributedString" keyPath="source" id="15z-o3-4ni"/>
+                                                                    <outlet property="delegate" destination="il5-cQ-3oh" id="9Mr-J3-zvR"/>
+                                                                </connections>
+                                                            </textView>
+                                                        </subviews>
+                                                        <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                                                    </clipView>
+                                                    <scroller key="horizontalScroller" hidden="YES" verticalHuggingPriority="750" doubleValue="1" horizontal="YES" id="BYM-Xm-JpT">
+                                                        <rect key="frame" x="-100" y="-100" width="87" height="18"/>
+                                                        <autoresizingMask key="autoresizingMask"/>
+                                                    </scroller>
+                                                    <scroller key="verticalScroller" verticalHuggingPriority="750" doubleValue="0.90909090909090906" horizontal="NO" id="SEU-Jq-fwu">
+                                                        <rect key="frame" x="328" y="1" width="15" height="105"/>
+                                                        <autoresizingMask key="autoresizingMask"/>
+                                                    </scroller>
+                                                </scrollView>
+                                            </subviews>
+                                            <constraints>
+                                                <constraint firstAttribute="bottom" secondItem="yLp-gf-r49" secondAttribute="bottom" id="3Zg-sl-ndb"/>
+                                                <constraint firstItem="yLp-gf-r49" firstAttribute="leading" secondItem="Fal-9S-dwR" secondAttribute="leading" id="MoY-ha-w7Q"/>
+                                                <constraint firstItem="yLp-gf-r49" firstAttribute="top" secondItem="Fal-9S-dwR" secondAttribute="top" id="rmR-5R-FQ1"/>
+                                                <constraint firstAttribute="trailing" secondItem="yLp-gf-r49" secondAttribute="trailing" id="z6B-m5-ePl"/>
+                                            </constraints>
+                                        </customView>
+                                    </subviews>
+                                    <holdingPriorities>
+                                        <real value="250"/>
+                                        <real value="250"/>
+                                    </holdingPriorities>
+                                </splitView>
+                            </subviews>
+                            <constraints>
+                                <constraint firstAttribute="trailing" secondItem="KKi-SZ-dS6" secondAttribute="trailing" id="Nae-MC-igi"/>
+                                <constraint firstAttribute="bottom" secondItem="KKi-SZ-dS6" secondAttribute="bottom" id="Tvy-gL-Wmv"/>
+                                <constraint firstItem="KKi-SZ-dS6" firstAttribute="top" secondItem="F5P-T2-9eB" secondAttribute="top" id="gIg-p8-zOO"/>
+                                <constraint firstItem="KKi-SZ-dS6" firstAttribute="leading" secondItem="F5P-T2-9eB" secondAttribute="leading" id="iHl-dm-VjB"/>
+                            </constraints>
+                        </view>
+                    </subviews>
+                    <holdingPriorities>
+                        <real value="250"/>
+                        <real value="250"/>
+                    </holdingPriorities>
+                </splitView>
+            </subviews>
+            <constraints>
+                <constraint firstAttribute="trailing" secondItem="DO1-FS-fZd" secondAttribute="trailing" id="Bow-1P-jx4"/>
+                <constraint firstAttribute="bottom" secondItem="DO1-FS-fZd" secondAttribute="bottom" id="c94-eC-Rhp"/>
+                <constraint firstItem="DO1-FS-fZd" firstAttribute="leading" secondItem="1" secondAttribute="leading" id="j1G-Ag-RLs"/>
+                <constraint firstItem="DO1-FS-fZd" firstAttribute="top" secondItem="1" secondAttribute="top" id="tBr-89-Ipp"/>
+            </constraints>
+        </customView>
+    </objects>
+    <resources>
+        <image name="NSStopProgressFreestandingTemplate" width="12" height="12"/>
+    </resources>
+</document>
diff --git a/tikzit/English.lproj/PropertyInspector.xib b/tikzit/English.lproj/PropertyInspector.xib
index 91e30c3..9f19b5c 100644
--- a/tikzit/English.lproj/PropertyInspector.xib
+++ b/tikzit/English.lproj/PropertyInspector.xib
@@ -1,3779 +1,769 @@
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-			<real value="4100" key="NS.object.0"/>
-		</object>
-		<bool key="IBDocument.PluginDeclaredDependenciesTrackSystemTargetVersion">YES</bool>
-		<int key="IBDocument.defaultPropertyAccessControl">3</int>
-		<dictionary class="NSMutableDictionary" key="IBDocument.LastKnownImageSizes">
-			<string key="NSAddTemplate">{8, 8}</string>
-			<string key="NSRemoveTemplate">{8, 8}</string>
-			<string key="NSSwitch">{15, 15}</string>
-		</dictionary>
-	</data>
-	<classes>
-		<class name="IBCustomFormatter">
-			<fallbacks>
-				<name>NSFormatter</name>
-			</fallbacks>
-		</class>
-	</classes>
-</archive>
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="5053" systemVersion="13C64" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none">
+    <dependencies>
+        <deployment defaultVersion="1070" identifier="macosx"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="5053"/>
+    </dependencies>
+    <objects>
+        <customObject id="-2" userLabel="File's Owner" customClass="PropertyInspectorController">
+            <connections>
+                <outlet property="edgeDataArrayController" destination="360" id="390"/>
+                <outlet property="edgeNodeCheckbox" destination="434" id="454"/>
+                <outlet property="edgeNodeDataArrayController" destination="442" id="452"/>
+                <outlet property="edgeNodeLabelField" destination="437" id="453"/>
+                <outlet property="edgePropertiesView" destination="361" id="389"/>
+                <outlet property="graphDataArrayController" destination="343" id="350"/>
+                <outlet property="graphPropertiesView" destination="301" id="354"/>
+                <outlet property="nodeDataArrayController" destination="272" id="282"/>
+                <outlet property="nodePropertiesView" destination="185" id="188"/>
+                <outlet property="propertyInspectorView" destination="463" id="464"/>
+                <outlet property="selectedEdgesArrayController" destination="585" id="586"/>
+                <outlet property="selectedNodesArrayController" destination="575" id="583"/>
+                <outlet property="sourceAnchorComboBox" destination="666" id="716"/>
+                <outlet property="sourceAnchorNamesArrayController" destination="674" id="678"/>
+                <outlet property="targetAnchorComboBox" destination="668" id="717"/>
+                <outlet property="targetAnchorNamesArrayController" destination="681" id="682"/>
+                <outlet property="window" destination="461" id="567"/>
+            </connections>
+        </customObject>
+        <customObject id="-1" userLabel="First Responder" customClass="FirstResponder"/>
+        <customObject id="-3" userLabel="Application"/>
+        <window title="Property Inspector" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" hidesOnDeactivate="YES" oneShot="NO" showsToolbarButton="NO" animationBehavior="default" id="461" customClass="NSPanel">
+            <windowStyleMask key="styleMask" titled="YES" closable="YES" miniaturizable="YES" utility="YES" nonactivatingPanel="YES"/>
+            <windowPositionMask key="initialPositionMask" rightStrut="YES" topStrut="YES"/>
+            <rect key="contentRect" x="1219" y="531" width="193" height="256"/>
+            <rect key="screenRect" x="0.0" y="0.0" width="1920" height="1200"/>
+            <value key="minSize" type="size" width="200" height="230"/>
+            <view key="contentView" id="462">
+                <rect key="frame" x="0.0" y="0.0" width="193" height="256"/>
+                <autoresizingMask key="autoresizingMask"/>
+                <subviews>
+                    <customView id="463" customClass="SFBInspectorView">
+                        <rect key="frame" x="0.0" y="0.0" width="193" height="256"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                    </customView>
+                </subviews>
+            </view>
+        </window>
+        <customView id="185" userLabel="Node Properties View">
+            <rect key="frame" x="0.0" y="0.0" width="193" height="152"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+            <subviews>
+                <textField verticalHuggingPriority="750" id="189">
+                    <rect key="frame" x="7" y="128" width="38" height="14"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" sendsActionOnEndEditing="YES" title="Label" id="190">
+                        <font key="font" metaFont="smallSystemBold"/>
+                        <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                        <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
+                    </textFieldCell>
+                </textField>
+                <button verticalHuggingPriority="750" id="206">
+                    <rect key="frame" x="4" y="3" width="26" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                    <buttonCell key="cell" type="smallSquare" bezelStyle="smallSquare" image="NSAddTemplate" imagePosition="overlaps" alignment="center" state="on" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="209">
+                        <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="miniSystem"/>
+                    </buttonCell>
+                    <connections>
+                        <action selector="addNodeProperty:" target="-2" id="348"/>
+                        <binding destination="272" name="enabled" keyPath="canAdd" id="615"/>
+                    </connections>
+                </button>
+                <button verticalHuggingPriority="750" id="283">
+                    <rect key="frame" x="28" y="3" width="26" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                    <buttonCell key="cell" type="smallSquare" title="     a" bezelStyle="smallSquare" image="NSAddTemplate" imagePosition="overlaps" alignment="center" state="on" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="284">
+                        <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="miniSystem"/>
+                    </buttonCell>
+                    <connections>
+                        <action selector="addNodeAtom:" target="-2" id="349"/>
+                        <binding destination="272" name="enabled" keyPath="canAdd" id="618"/>
+                    </connections>
+                </button>
+                <button verticalHuggingPriority="750" id="207">
+                    <rect key="frame" x="53" y="3" width="26" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                    <buttonCell key="cell" type="smallSquare" bezelStyle="smallSquare" image="NSRemoveTemplate" imagePosition="overlaps" alignment="center" state="on" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="208">
+                        <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="system"/>
+                    </buttonCell>
+                    <connections>
+                        <action selector="removeNodeProperty:" target="-2" id="359"/>
+                        <binding destination="272" name="enabled" keyPath="canRemove" id="297"/>
+                    </connections>
+                </button>
+                <textField verticalHuggingPriority="750" id="191">
+                    <rect key="frame" x="54" y="127" width="134" height="19"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" selectable="YES" editable="YES" sendsActionOnEndEditing="YES" state="on" borderStyle="bezel" drawsBackground="YES" id="192">
+                        <font key="font" metaFont="smallSystem"/>
+                        <color key="textColor" name="textColor" catalog="System" colorSpace="catalog"/>
+                        <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
+                    </textFieldCell>
+                    <connections>
+                        <binding destination="575" name="value" keyPath="selection.label" id="644">
+                            <dictionary key="options">
+                                <string key="NSMultipleValuesPlaceholder">Multiple Values</string>
+                                <string key="NSValueTransformerName">NilToEmptyStringTransformer</string>
+                            </dictionary>
+                        </binding>
+                        <outlet property="delegate" destination="-2" id="584"/>
+                        <outlet property="formatter" destination="718" id="719"/>
+                    </connections>
+                </textField>
+                <scrollView autohidesScrollers="YES" horizontalLineScroll="19" horizontalPageScroll="10" verticalLineScroll="19" verticalPageScroll="10" usesPredominantAxisScrolling="NO" id="258">
+                    <rect key="frame" x="4" y="31" width="185" height="92"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <clipView key="contentView" id="KAN-x5-ywG">
+                        <rect key="frame" x="1" y="17" width="183" height="74"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <tableView verticalHuggingPriority="750" allowsExpansionToolTips="YES" columnAutoresizingStyle="lastColumnOnly" columnSelection="YES" multipleSelection="NO" autosaveColumns="NO" headerView="262" id="261">
+                                <rect key="frame" x="0.0" y="0.0" width="183" height="74"/>
+                                <autoresizingMask key="autoresizingMask"/>
+                                <size key="intercellSpacing" width="3" height="2"/>
+                                <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                                <color key="gridColor" name="gridColor" catalog="System" colorSpace="catalog"/>
+                                <tableColumns>
+                                    <tableColumn width="85" minWidth="40" maxWidth="1000" id="263">
+                                        <tableHeaderCell key="headerCell" lineBreakMode="truncatingTail" borderStyle="border" alignment="left" title="Key/Atom">
+                                            <font key="font" metaFont="smallSystem"/>
+                                            <color key="textColor" name="headerTextColor" catalog="System" colorSpace="catalog"/>
+                                            <color key="backgroundColor" white="0.33333298560000002" alpha="1" colorSpace="calibratedWhite"/>
+                                        </tableHeaderCell>
+                                        <textFieldCell key="dataCell" lineBreakMode="truncatingTail" selectable="YES" editable="YES" alignment="left" title="Text Cell" id="266">
+                                            <font key="font" metaFont="smallSystem"/>
+                                            <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                                            <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                                            <connections>
+                                                <outlet property="formatter" destination="718" id="734"/>
+                                            </connections>
+                                        </textFieldCell>
+                                        <tableColumnResizingMask key="resizingMask" resizeWithTable="YES" userResizable="YES"/>
+                                        <connections>
+                                            <binding destination="272" name="value" keyPath="arrangedObjects.key" id="274"/>
+                                        </connections>
+                                    </tableColumn>
+                                    <tableColumn width="92" minWidth="40" maxWidth="1000" id="264">
+                                        <tableHeaderCell key="headerCell" lineBreakMode="truncatingTail" borderStyle="border" alignment="left" title="Value">
+                                            <font key="font" metaFont="smallSystem"/>
+                                            <color key="textColor" name="headerTextColor" catalog="System" colorSpace="catalog"/>
+                                            <color key="backgroundColor" white="0.33333298560000002" alpha="1" colorSpace="calibratedWhite"/>
+                                        </tableHeaderCell>
+                                        <textFieldCell key="dataCell" lineBreakMode="truncatingTail" selectable="YES" editable="YES" alignment="left" title="Text Cell" id="265">
+                                            <font key="font" metaFont="smallSystem"/>
+                                            <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                                            <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                                            <connections>
+                                                <outlet property="formatter" destination="718" id="733"/>
+                                            </connections>
+                                        </textFieldCell>
+                                        <tableColumnResizingMask key="resizingMask" resizeWithTable="YES" userResizable="YES"/>
+                                        <connections>
+                                            <binding destination="272" name="enabled" keyPath="arrangedObjects.isAtom" id="281">
+                                                <dictionary key="options">
+                                                    <string key="NSValueTransformerName">NSNegateBoolean</string>
+                                                </dictionary>
+                                            </binding>
+                                            <binding destination="272" name="value" keyPath="arrangedObjects.value" id="277"/>
+                                        </connections>
+                                    </tableColumn>
+                                </tableColumns>
+                                <connections>
+                                    <binding destination="272" name="content" keyPath="arrangedObjects" id="278"/>
+                                    <binding destination="272" name="enabled" keyPath="isEditable" id="622"/>
+                                    <binding destination="272" name="selectionIndexes" keyPath="selectionIndexes" previousBinding="278" id="650"/>
+                                    <outlet property="delegate" destination="-2" id="290"/>
+                                </connections>
+                            </tableView>
+                        </subviews>
+                        <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                    </clipView>
+                    <scroller key="horizontalScroller" hidden="YES" verticalHuggingPriority="750" horizontal="YES" id="260">
+                        <rect key="frame" x="1" y="75" width="183" height="16"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </scroller>
+                    <scroller key="verticalScroller" hidden="YES" verticalHuggingPriority="750" horizontal="NO" id="259">
+                        <rect key="frame" x="224" y="17" width="15" height="102"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </scroller>
+                    <tableHeaderView key="headerView" id="262">
+                        <rect key="frame" x="0.0" y="0.0" width="183" height="17"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </tableHeaderView>
+                </scrollView>
+            </subviews>
+        </customView>
+        <customView id="301" userLabel="Graph Properties View">
+            <rect key="frame" x="0.0" y="0.0" width="193" height="130"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+            <subviews>
+                <button verticalHuggingPriority="750" id="307">
+                    <rect key="frame" x="4" y="4" width="26" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                    <buttonCell key="cell" type="smallSquare" bezelStyle="smallSquare" image="NSAddTemplate" imagePosition="overlaps" alignment="center" state="on" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="314">
+                        <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="miniSystem"/>
+                    </buttonCell>
+                    <connections>
+                        <action selector="addGraphProperty:" target="-2" id="351"/>
+                        <binding destination="343" name="enabled" keyPath="canAdd" id="640"/>
+                    </connections>
+                </button>
+                <button verticalHuggingPriority="750" id="303">
+                    <rect key="frame" x="28" y="4" width="26" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                    <buttonCell key="cell" type="smallSquare" title="     a" bezelStyle="smallSquare" image="NSAddTemplate" imagePosition="overlaps" alignment="center" state="on" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="325">
+                        <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="miniSystem"/>
+                    </buttonCell>
+                    <connections>
+                        <action selector="addGraphAtom:" target="-2" id="352"/>
+                        <binding destination="343" name="enabled" keyPath="canAdd" id="643"/>
+                    </connections>
+                </button>
+                <button verticalHuggingPriority="750" id="302">
+                    <rect key="frame" x="53" y="4" width="26" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                    <buttonCell key="cell" type="smallSquare" bezelStyle="smallSquare" image="NSRemoveTemplate" imagePosition="overlaps" alignment="center" state="on" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="326">
+                        <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="system"/>
+                    </buttonCell>
+                    <connections>
+                        <action selector="removeGraphProperty:" target="-2" id="358"/>
+                        <binding destination="343" name="enabled" keyPath="canRemove" id="347"/>
+                    </connections>
+                </button>
+                <scrollView autohidesScrollers="YES" horizontalLineScroll="19" horizontalPageScroll="10" verticalLineScroll="19" verticalPageScroll="10" usesPredominantAxisScrolling="NO" id="304">
+                    <rect key="frame" x="4" y="33" width="185" height="92"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <clipView key="contentView" id="86P-5s-gB4">
+                        <rect key="frame" x="1" y="17" width="183" height="74"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                        <subviews>
+                            <tableView verticalHuggingPriority="750" allowsExpansionToolTips="YES" columnAutoresizingStyle="lastColumnOnly" columnSelection="YES" multipleSelection="NO" autosaveColumns="NO" headerView="317" id="318">
+                                <rect key="frame" x="0.0" y="0.0" width="183" height="74"/>
+                                <autoresizingMask key="autoresizingMask"/>
+                                <size key="intercellSpacing" width="3" height="2"/>
+                                <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                                <color key="gridColor" name="gridColor" catalog="System" colorSpace="catalog"/>
+                                <tableColumns>
+                                    <tableColumn width="85" minWidth="40" maxWidth="1000" id="322">
+                                        <tableHeaderCell key="headerCell" lineBreakMode="truncatingTail" borderStyle="border" alignment="left" title="Key/Atom">
+                                            <font key="font" metaFont="smallSystem"/>
+                                            <color key="textColor" name="headerTextColor" catalog="System" colorSpace="catalog"/>
+                                            <color key="backgroundColor" white="0.33333298560000002" alpha="1" colorSpace="calibratedWhite"/>
+                                        </tableHeaderCell>
+                                        <textFieldCell key="dataCell" lineBreakMode="truncatingTail" selectable="YES" editable="YES" alignment="left" title="Text Cell" id="323">
+                                            <font key="font" metaFont="smallSystem"/>
+                                            <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                                            <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                                            <connections>
+                                                <outlet property="formatter" destination="718" id="728"/>
+                                            </connections>
+                                        </textFieldCell>
+                                        <tableColumnResizingMask key="resizingMask" resizeWithTable="YES" userResizable="YES"/>
+                                        <connections>
+                                            <binding destination="343" name="value" keyPath="arrangedObjects.key" id="645">
+                                                <dictionary key="options">
+                                                    <string key="NSValueTransformerName">NilToEmptyStringTransformer</string>
+                                                </dictionary>
+                                            </binding>
+                                        </connections>
+                                    </tableColumn>
+                                    <tableColumn width="92" minWidth="40" maxWidth="1000" id="321">
+                                        <tableHeaderCell key="headerCell" lineBreakMode="truncatingTail" borderStyle="border" alignment="left" title="Value">
+                                            <font key="font" metaFont="smallSystem"/>
+                                            <color key="textColor" name="headerTextColor" catalog="System" colorSpace="catalog"/>
+                                            <color key="backgroundColor" white="0.33333298560000002" alpha="1" colorSpace="calibratedWhite"/>
+                                        </tableHeaderCell>
+                                        <textFieldCell key="dataCell" lineBreakMode="truncatingTail" selectable="YES" editable="YES" alignment="left" title="Text Cell" id="324">
+                                            <font key="font" metaFont="smallSystem"/>
+                                            <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                                            <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                                            <connections>
+                                                <outlet property="formatter" destination="718" id="727"/>
+                                            </connections>
+                                        </textFieldCell>
+                                        <tableColumnResizingMask key="resizingMask" resizeWithTable="YES" userResizable="YES"/>
+                                        <connections>
+                                            <binding destination="343" name="enabled" keyPath="arrangedObjects.isAtom" id="356">
+                                                <dictionary key="options">
+                                                    <string key="NSValueTransformerName">NSNegateBoolean</string>
+                                                </dictionary>
+                                            </binding>
+                                            <binding destination="343" name="value" keyPath="arrangedObjects.value" id="357"/>
+                                        </connections>
+                                    </tableColumn>
+                                </tableColumns>
+                                <connections>
+                                    <binding destination="343" name="content" keyPath="arrangedObjects" id="346"/>
+                                    <binding destination="343" name="enabled" keyPath="isEditable" id="638"/>
+                                    <binding destination="343" name="selectionIndexes" keyPath="selectionIndexes" previousBinding="346" id="652"/>
+                                    <outlet property="delegate" destination="-2" id="331"/>
+                                </connections>
+                            </tableView>
+                        </subviews>
+                        <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                    </clipView>
+                    <scroller key="horizontalScroller" hidden="YES" verticalHuggingPriority="750" horizontal="YES" id="319">
+                        <rect key="frame" x="1" y="75" width="183" height="16"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </scroller>
+                    <scroller key="verticalScroller" hidden="YES" verticalHuggingPriority="750" horizontal="NO" id="320">
+                        <rect key="frame" x="224" y="17" width="15" height="102"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </scroller>
+                    <tableHeaderView key="headerView" id="317">
+                        <rect key="frame" x="0.0" y="0.0" width="183" height="17"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </tableHeaderView>
+                </scrollView>
+            </subviews>
+        </customView>
+        <customView id="361" userLabel="Edge Properties View">
+            <rect key="frame" x="0.0" y="0.0" width="193" height="344"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+            <subviews>
+                <button verticalHuggingPriority="750" id="362">
+                    <rect key="frame" x="4" y="218" width="26" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                    <buttonCell key="cell" type="smallSquare" bezelStyle="smallSquare" image="NSAddTemplate" imagePosition="overlaps" alignment="center" state="on" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="376">
+                        <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="miniSystem"/>
+                    </buttonCell>
+                    <connections>
+                        <action selector="addEdgeProperty:" target="-2" id="391"/>
+                        <binding destination="360" name="enabled" keyPath="canAdd" id="612"/>
+                    </connections>
+                </button>
+                <button verticalHuggingPriority="750" id="364">
+                    <rect key="frame" x="28" y="218" width="26" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                    <buttonCell key="cell" type="smallSquare" title="     a" bezelStyle="smallSquare" image="NSAddTemplate" imagePosition="overlaps" alignment="center" state="on" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="367">
+                        <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="miniSystem"/>
+                    </buttonCell>
+                    <connections>
+                        <action selector="addEdgeAtom:" target="-2" id="392"/>
+                        <binding destination="360" name="enabled" keyPath="canAdd" id="624"/>
+                    </connections>
+                </button>
+                <button verticalHuggingPriority="750" id="365">
+                    <rect key="frame" x="53" y="218" width="26" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                    <buttonCell key="cell" type="smallSquare" bezelStyle="smallSquare" image="NSRemoveTemplate" imagePosition="overlaps" alignment="center" state="on" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="366">
+                        <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="system"/>
+                    </buttonCell>
+                    <connections>
+                        <action selector="removeEdgeProperty:" target="-2" id="393"/>
+                        <binding destination="360" name="enabled" keyPath="canRemove" id="394"/>
+                    </connections>
+                </button>
+                <button verticalHuggingPriority="750" id="422">
+                    <rect key="frame" x="4" y="8" width="26" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                    <buttonCell key="cell" type="smallSquare" bezelStyle="smallSquare" image="NSAddTemplate" imagePosition="overlaps" alignment="center" state="on" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="427">
+                        <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="miniSystem"/>
+                    </buttonCell>
+                    <connections>
+                        <action selector="addEdgeNodeProperty:" target="-2" id="449"/>
+                        <binding destination="442" name="enabled" keyPath="canAdd" id="626"/>
+                    </connections>
+                </button>
+                <button verticalHuggingPriority="750" id="423">
+                    <rect key="frame" x="28" y="8" width="26" height="26"/>
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+                    <buttonCell key="cell" type="smallSquare" title="     a" bezelStyle="smallSquare" image="NSAddTemplate" imagePosition="overlaps" alignment="center" state="on" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="426">
+                        <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="miniSystem"/>
+                    </buttonCell>
+                    <connections>
+                        <action selector="addEdgeNodeAtom:" target="-2" id="450"/>
+                        <binding destination="442" name="enabled" keyPath="canAdd" id="628"/>
+                    </connections>
+                </button>
+                <button verticalHuggingPriority="750" id="424">
+                    <rect key="frame" x="53" y="8" width="26" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                    <buttonCell key="cell" type="smallSquare" bezelStyle="smallSquare" image="NSRemoveTemplate" imagePosition="overlaps" alignment="center" state="on" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="425">
+                        <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="system"/>
+                    </buttonCell>
+                    <connections>
+                        <action selector="removeEdgeNodeProperty:" target="-2" id="451"/>
+                        <binding destination="442" name="enabled" keyPath="canRemove" id="460"/>
+                    </connections>
+                </button>
+                <scrollView autohidesScrollers="YES" horizontalLineScroll="19" horizontalPageScroll="10" verticalLineScroll="19" verticalPageScroll="10" usesPredominantAxisScrolling="NO" id="363">
+                    <rect key="frame" x="4" y="247" width="185" height="92"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <clipView key="contentView" id="qY7-YX-vfN">
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+                        <autoresizingMask key="autoresizingMask"/>
+                        <subviews>
+                            <tableView verticalHuggingPriority="750" allowsExpansionToolTips="YES" columnAutoresizingStyle="lastColumnOnly" columnSelection="YES" multipleSelection="NO" autosaveColumns="NO" headerView="371" id="370">
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+                                <autoresizingMask key="autoresizingMask"/>
+                                <size key="intercellSpacing" width="3" height="2"/>
+                                <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                                <color key="gridColor" name="gridColor" catalog="System" colorSpace="catalog"/>
+                                <tableColumns>
+                                    <tableColumn width="85" minWidth="40" maxWidth="1000" id="372">
+                                        <tableHeaderCell key="headerCell" lineBreakMode="truncatingTail" borderStyle="border" alignment="left" title="Key/Atom">
+                                            <font key="font" metaFont="smallSystem"/>
+                                            <color key="textColor" name="headerTextColor" catalog="System" colorSpace="catalog"/>
+                                            <color key="backgroundColor" white="0.33333298560000002" alpha="1" colorSpace="calibratedWhite"/>
+                                        </tableHeaderCell>
+                                        <textFieldCell key="dataCell" lineBreakMode="truncatingTail" selectable="YES" editable="YES" alignment="left" title="Text Cell" id="375">
+                                            <font key="font" metaFont="smallSystem"/>
+                                            <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                                            <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                                            <connections>
+                                                <outlet property="formatter" destination="718" id="729"/>
+                                            </connections>
+                                        </textFieldCell>
+                                        <tableColumnResizingMask key="resizingMask" resizeWithTable="YES" userResizable="YES"/>
+                                        <connections>
+                                            <binding destination="360" name="value" keyPath="arrangedObjects.key" id="646">
+                                                <dictionary key="options">
+                                                    <string key="NSValueTransformerName">NilToEmptyStringTransformer</string>
+                                                </dictionary>
+                                            </binding>
+                                        </connections>
+                                    </tableColumn>
+                                    <tableColumn width="92" minWidth="40" maxWidth="1000" id="373">
+                                        <tableHeaderCell key="headerCell" lineBreakMode="truncatingTail" borderStyle="border" alignment="left" title="Value">
+                                            <font key="font" metaFont="smallSystem"/>
+                                            <color key="textColor" name="headerTextColor" catalog="System" colorSpace="catalog"/>
+                                            <color key="backgroundColor" white="0.33333298560000002" alpha="1" colorSpace="calibratedWhite"/>
+                                        </tableHeaderCell>
+                                        <textFieldCell key="dataCell" lineBreakMode="truncatingTail" selectable="YES" editable="YES" alignment="left" title="Text Cell" id="374">
+                                            <font key="font" metaFont="smallSystem"/>
+                                            <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                                            <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                                            <connections>
+                                                <outlet property="formatter" destination="718" id="730"/>
+                                            </connections>
+                                        </textFieldCell>
+                                        <tableColumnResizingMask key="resizingMask" resizeWithTable="YES" userResizable="YES"/>
+                                        <connections>
+                                            <binding destination="360" name="enabled" keyPath="arrangedObjects.isAtom" id="467">
+                                                <dictionary key="options">
+                                                    <string key="NSValueTransformerName">NSNegateBoolean</string>
+                                                </dictionary>
+                                            </binding>
+                                            <binding destination="360" name="value" keyPath="arrangedObjects.value" id="405"/>
+                                        </connections>
+                                    </tableColumn>
+                                </tableColumns>
+                                <connections>
+                                    <binding destination="360" name="content" keyPath="arrangedObjects" id="401"/>
+                                    <binding destination="360" name="enabled" keyPath="isEditable" id="630"/>
+                                    <binding destination="360" name="selectionIndexes" keyPath="selectionIndexes" previousBinding="401" id="654"/>
+                                    <outlet property="delegate" destination="-2" id="382"/>
+                                </connections>
+                            </tableView>
+                        </subviews>
+                        <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                    </clipView>
+                    <scroller key="horizontalScroller" hidden="YES" verticalHuggingPriority="750" horizontal="YES" id="369">
+                        <rect key="frame" x="1" y="75" width="183" height="16"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </scroller>
+                    <scroller key="verticalScroller" hidden="YES" verticalHuggingPriority="750" horizontal="NO" id="368">
+                        <rect key="frame" x="224" y="17" width="15" height="102"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </scroller>
+                    <tableHeaderView key="headerView" id="371">
+                        <rect key="frame" x="0.0" y="0.0" width="183" height="17"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </tableHeaderView>
+                </scrollView>
+                <scrollView autohidesScrollers="YES" horizontalLineScroll="19" horizontalPageScroll="10" verticalLineScroll="19" verticalPageScroll="10" usesPredominantAxisScrolling="NO" id="408">
+                    <rect key="frame" x="4" y="37" width="185" height="62"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <clipView key="contentView" id="Sh6-qW-PDE">
+                        <rect key="frame" x="1" y="17" width="183" height="44"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                        <subviews>
+                            <tableView verticalHuggingPriority="750" allowsExpansionToolTips="YES" columnAutoresizingStyle="lastColumnOnly" columnSelection="YES" multipleSelection="NO" autosaveColumns="NO" headerView="409" id="410">
+                                <rect key="frame" x="0.0" y="0.0" width="183" height="44"/>
+                                <autoresizingMask key="autoresizingMask"/>
+                                <size key="intercellSpacing" width="3" height="2"/>
+                                <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                                <color key="gridColor" name="gridColor" catalog="System" colorSpace="catalog"/>
+                                <tableColumns>
+                                    <tableColumn width="85" minWidth="40" maxWidth="1000" id="414">
+                                        <tableHeaderCell key="headerCell" lineBreakMode="truncatingTail" borderStyle="border" alignment="left" title="Key/Atom">
+                                            <font key="font" metaFont="smallSystem"/>
+                                            <color key="textColor" name="headerTextColor" catalog="System" colorSpace="catalog"/>
+                                            <color key="backgroundColor" white="0.33333298560000002" alpha="1" colorSpace="calibratedWhite"/>
+                                        </tableHeaderCell>
+                                        <textFieldCell key="dataCell" lineBreakMode="truncatingTail" selectable="YES" editable="YES" alignment="left" title="Text Cell" id="415">
+                                            <font key="font" metaFont="smallSystem"/>
+                                            <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                                            <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                                            <connections>
+                                                <outlet property="formatter" destination="718" id="731"/>
+                                            </connections>
+                                        </textFieldCell>
+                                        <tableColumnResizingMask key="resizingMask" resizeWithTable="YES" userResizable="YES"/>
+                                        <connections>
+                                            <binding destination="442" name="value" keyPath="arrangedObjects.key" id="647">
+                                                <dictionary key="options">
+                                                    <string key="NSValueTransformerName">NilToEmptyStringTransformer</string>
+                                                </dictionary>
+                                            </binding>
+                                        </connections>
+                                    </tableColumn>
+                                    <tableColumn width="92" minWidth="40" maxWidth="1000" id="413">
+                                        <tableHeaderCell key="headerCell" lineBreakMode="truncatingTail" borderStyle="border" alignment="left" title="Value">
+                                            <font key="font" metaFont="smallSystem"/>
+                                            <color key="textColor" name="headerTextColor" catalog="System" colorSpace="catalog"/>
+                                            <color key="backgroundColor" white="0.33333298560000002" alpha="1" colorSpace="calibratedWhite"/>
+                                        </tableHeaderCell>
+                                        <textFieldCell key="dataCell" lineBreakMode="truncatingTail" selectable="YES" editable="YES" alignment="left" title="Text Cell" id="416">
+                                            <font key="font" metaFont="smallSystem"/>
+                                            <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                                            <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                                            <connections>
+                                                <outlet property="formatter" destination="718" id="732"/>
+                                            </connections>
+                                        </textFieldCell>
+                                        <tableColumnResizingMask key="resizingMask" resizeWithTable="YES" userResizable="YES"/>
+                                        <connections>
+                                            <binding destination="442" name="enabled" keyPath="arrangedObjects.isAtom" id="459">
+                                                <dictionary key="options">
+                                                    <string key="NSValueTransformerName">NSNegateBoolean</string>
+                                                </dictionary>
+                                            </binding>
+                                            <binding destination="442" name="value" keyPath="arrangedObjects.value" id="445"/>
+                                        </connections>
+                                    </tableColumn>
+                                </tableColumns>
+                                <connections>
+                                    <binding destination="442" name="content" keyPath="arrangedObjects" id="443"/>
+                                    <binding destination="442" name="enabled" keyPath="isEditable" id="632"/>
+                                    <binding destination="442" name="selectionIndexes" keyPath="selectionIndexes" previousBinding="443" id="656"/>
+                                    <outlet property="delegate" destination="-2" id="421"/>
+                                    <outlet property="formatter" destination="718" id="724"/>
+                                </connections>
+                            </tableView>
+                        </subviews>
+                        <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                    </clipView>
+                    <scroller key="horizontalScroller" hidden="YES" verticalHuggingPriority="750" horizontal="YES" id="411">
+                        <rect key="frame" x="1" y="45" width="183" height="16"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </scroller>
+                    <scroller key="verticalScroller" hidden="YES" verticalHuggingPriority="750" horizontal="NO" id="412">
+                        <rect key="frame" x="224" y="17" width="15" height="102"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </scroller>
+                    <tableHeaderView key="headerView" id="409">
+                        <rect key="frame" x="0.0" y="0.0" width="183" height="17"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </tableHeaderView>
+                </scrollView>
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+                    <rect key="frame" x="3" y="126" width="82" height="18"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <buttonCell key="cell" type="check" title="Child Node" bezelStyle="regularSquare" imagePosition="left" alignment="left" inset="2" id="435">
+                        <behavior key="behavior" changeContents="YES" doesNotDimImage="YES" lightByContents="YES"/>
+                        <font key="font" metaFont="smallSystem"/>
+                    </buttonCell>
+                    <connections>
+                        <action selector="refreshDocument:" target="-2" id="596"/>
+                        <binding destination="585" name="value" keyPath="selection.hasEdgeNode" id="595"/>
+                    </connections>
+                </button>
+                <textField verticalHuggingPriority="750" id="436">
+                    <rect key="frame" x="8" y="107" width="38" height="14"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" sendsActionOnEndEditing="YES" title="Label" id="439">
+                        <font key="font" metaFont="smallSystemBold"/>
+                        <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                        <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
+                    </textFieldCell>
+                </textField>
+                <textField verticalHuggingPriority="750" id="664">
+                    <rect key="frame" x="4" y="202" width="51" height="14"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" sendsActionOnEndEditing="YES" title="Anchors" id="665">
+                        <font key="font" metaFont="smallSystemBold"/>
+                        <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                        <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
+                    </textFieldCell>
+                </textField>
+                <textField verticalHuggingPriority="750" id="670">
+                    <rect key="frame" x="12" y="185" width="42" height="14"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" sendsActionOnEndEditing="YES" title="Source" id="671">
+                        <font key="font" metaFont="smallSystemBold"/>
+                        <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                        <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
+                    </textFieldCell>
+                </textField>
+                <textField verticalHuggingPriority="750" id="672">
+                    <rect key="frame" x="12" y="159" width="42" height="14"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" sendsActionOnEndEditing="YES" title="Target" id="673">
+                        <font key="font" metaFont="smallSystemBold"/>
+                        <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                        <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
+                    </textFieldCell>
+                </textField>
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+                    <rect key="frame" x="55" y="107" width="134" height="19"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
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+                        <color key="textColor" name="textColor" catalog="System" colorSpace="catalog"/>
+                        <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
+                    </textFieldCell>
+                    <connections>
+                        <binding destination="585" name="enabled" keyPath="selection.hasEdgeNode" id="636"/>
+                        <binding destination="585" name="value" keyPath="selection.edgeNode.label" id="648">
+                            <dictionary key="options">
+                                <string key="NSValueTransformerName">NilToEmptyStringTransformer</string>
+                            </dictionary>
+                        </binding>
+                        <outlet property="delegate" destination="-2" id="440"/>
+                        <outlet property="formatter" destination="718" id="723"/>
+                    </connections>
+                </textField>
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+                    <rect key="frame" x="4" y="146" width="185" height="5"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <color key="borderColor" white="0.0" alpha="0.41999999999999998" colorSpace="calibratedWhite"/>
+                    <color key="fillColor" white="0.0" alpha="0.0" colorSpace="calibratedWhite"/>
+                    <font key="titleFont" metaFont="system"/>
+                </box>
+                <comboBox verticalHuggingPriority="750" id="666">
+                    <rect key="frame" x="59" y="178" width="133" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <comboBoxCell key="cell" scrollable="YES" lineBreakMode="clipping" selectable="YES" editable="YES" sendsActionOnEndEditing="YES" borderStyle="bezel" drawsBackground="YES" numberOfVisibleItems="5" id="667">
+                        <font key="font" metaFont="system"/>
+                        <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                        <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
+                    </comboBoxCell>
+                    <connections>
+                        <binding destination="674" name="content" keyPath="arrangedObjects" id="707"/>
+                        <binding destination="674" name="contentValues" keyPath="arrangedObjects" previousBinding="707" id="708"/>
+                        <binding destination="585" name="value" keyPath="selection.sourceAnchor" previousBinding="708" id="709"/>
+                        <outlet property="delegate" destination="-2" id="714"/>
+                        <outlet property="formatter" destination="718" id="726"/>
+                    </connections>
+                </comboBox>
+                <comboBox verticalHuggingPriority="750" id="668">
+                    <rect key="frame" x="59" y="152" width="133" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <comboBoxCell key="cell" scrollable="YES" lineBreakMode="clipping" selectable="YES" editable="YES" sendsActionOnEndEditing="YES" borderStyle="bezel" drawsBackground="YES" numberOfVisibleItems="5" id="669">
+                        <font key="font" metaFont="system"/>
+                        <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                        <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
+                    </comboBoxCell>
+                    <connections>
+                        <binding destination="681" name="content" keyPath="arrangedObjects" id="710"/>
+                        <binding destination="681" name="contentValues" keyPath="arrangedObjects" previousBinding="710" id="711"/>
+                        <binding destination="585" name="value" keyPath="selection.targetAnchor" previousBinding="711" id="713"/>
+                        <outlet property="delegate" destination="-2" id="715"/>
+                        <outlet property="formatter" destination="718" id="725"/>
+                    </connections>
+                </comboBox>
+            </subviews>
+        </customView>
+        <arrayController objectClassName="Property" id="272" userLabel="Node Data Array Controller">
+            <declaredKeys>
+                <string>key</string>
+                <string>value</string>
+                <string>isAtom</string>
+            </declaredKeys>
+        </arrayController>
+        <arrayController objectClassName="Property" id="343" userLabel="Graph Data Array Controller">
+            <declaredKeys>
+                <string>key</string>
+                <string>value</string>
+                <string>isAtom</string>
+            </declaredKeys>
+        </arrayController>
+        <arrayController objectClassName="Property" id="360" userLabel="Edge Data Array Controller">
+            <declaredKeys>
+                <string>key</string>
+                <string>value</string>
+                <string>isAtom</string>
+            </declaredKeys>
+        </arrayController>
+        <arrayController objectClassName="Property" id="442" userLabel="Edge Node Data Array Controller">
+            <declaredKeys>
+                <string>key</string>
+                <string>value</string>
+                <string>isAtom</string>
+            </declaredKeys>
+        </arrayController>
+        <arrayController objectClassName="Node" id="575" userLabel="Selected Nodes Array Controller">
+            <declaredKeys>
+                <string>label</string>
+            </declaredKeys>
+            <connections>
+                <binding destination="-2" name="contentArray" keyPath="selectedNodes" id="577"/>
+            </connections>
+        </arrayController>
+        <arrayController objectClassName="Edge" id="585" userLabel="Selected Edges Array Controller">
+            <declaredKeys>
+                <string>edgeNode</string>
+            </declaredKeys>
+            <connections>
+                <binding destination="-2" name="contentArray" keyPath="selectedEdges" id="589"/>
+            </connections>
+        </arrayController>
+        <textField verticalHuggingPriority="750" id="657">
+            <rect key="frame" x="0.0" y="0.0" width="51" height="14"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+            <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" sendsActionOnEndEditing="YES" title="Anchors" id="660">
+                <font key="font" metaFont="smallSystemBold"/>
+                <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
+            </textFieldCell>
+        </textField>
+        <textField verticalHuggingPriority="750" id="658">
+            <rect key="frame" x="0.0" y="0.0" width="134" height="19"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+            <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" selectable="YES" editable="YES" sendsActionOnEndEditing="YES" state="on" borderStyle="bezel" drawsBackground="YES" id="659">
+                <font key="font" metaFont="smallSystem"/>
+                <color key="textColor" name="textColor" catalog="System" colorSpace="catalog"/>
+                <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
+            </textFieldCell>
+            <connections>
+                <binding destination="585" name="enabled" keyPath="selection.hasEdgeNode" id="661"/>
+                <binding destination="585" name="value" keyPath="selection.edgeNode.label" id="662">
+                    <dictionary key="options">
+                        <string key="NSValueTransformerName">NilToEmptyStringTransformer</string>
+                    </dictionary>
+                </binding>
+                <outlet property="delegate" destination="-2" id="663"/>
+            </connections>
+        </textField>
+        <arrayController id="674" userLabel="Source Anchor Names Array Controller">
+            <connections>
+                <binding destination="-2" name="contentArray" keyPath="sourceAnchorNames" id="680"/>
+                <outlet property="content" destination="666" id="675"/>
+            </connections>
+        </arrayController>
+        <arrayController id="681" userLabel="Target Anchor Names Array Controller">
+            <connections>
+                <binding destination="-2" name="contentArray" keyPath="targetAnchorNames" id="684"/>
+            </connections>
+        </arrayController>
+        <customFormatter id="718" customClass="TikzFormatter"/>
+    </objects>
+    <resources>
+        <image name="NSAddTemplate" width="8" height="8"/>
+        <image name="NSRemoveTemplate" width="8" height="8"/>
+    </resources>
+</document>
diff --git a/tikzit/English.lproj/StylePalette.xib b/tikzit/English.lproj/StylePalette.xib
index 2d3472c..6385ba8 100644
--- a/tikzit/English.lproj/StylePalette.xib
+++ b/tikzit/English.lproj/StylePalette.xib
@@ -1,3483 +1,631 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<archive type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="7.10">
-	<data>
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-		<string key="IBDocument.SystemVersion">12C60</string>
-		<string key="IBDocument.InterfaceBuilderVersion">2843</string>
-		<string key="IBDocument.AppKitVersion">1187.34</string>
-		<string key="IBDocument.HIToolboxVersion">625.00</string>
-		<object class="NSMutableDictionary" key="IBDocument.PluginVersions">
-			<string key="NS.key.0">com.apple.InterfaceBuilder.CocoaPlugin</string>
-			<string key="NS.object.0">2843</string>
-		</object>
-		<object class="NSArray" key="IBDocument.IntegratedClassDependencies">
-			<bool key="EncodedWithXMLCoder">YES</bool>
-			<string>NSArrayController</string>
-			<string>NSButton</string>
-			<string>NSButtonCell</string>
-			<string>NSCollectionView</string>
-			<string>NSCollectionViewItem</string>
-			<string>NSColorWell</string>
-			<string>NSComboBox</string>
-			<string>NSComboBoxCell</string>
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+                        <binding destination="605" name="value" keyPath="selection.category" previousBinding="858" id="859">
+                            <dictionary key="options">
+                                <string key="NSNullPlaceholder">uncategorized</string>
+                            </dictionary>
+                        </binding>
+                    </connections>
+                </comboBox>
+            </subviews>
+        </customView>
+        <arrayController objectClassName="NodeStyle" id="56" userLabel="Node Style Array Controller">
+            <declaredKeys>
+                <string>name</string>
+                <string>strokeThickness</string>
+                <string>strokeColor</string>
+                <string>fillColor</string>
+                <string>strokeColorIsKnown</string>
+                <string>fillColorIsKnown</string>
+                <string>representedObject.name</string>
+                <string>shapeName</string>
+                <string>scale</string>
+                <string>@distinctUnionOfObjects.category</string>
+                <string>category</string>
+            </declaredKeys>
+            <connections>
+                <binding destination="-2" name="contentArray" keyPath="nodeStyles" id="58"/>
+            </connections>
+        </arrayController>
+        <arrayController id="605" userLabel="Filtered Node Style Array Controller">
+            <declaredKeys>
+                <string>@distinctUnionOfObjects.category</string>
+            </declaredKeys>
+            <connections>
+                <binding destination="-2" name="contentArray" keyPath="nodeStyles" id="843"/>
+                <binding destination="-2" name="filterPredicate" keyPath="displayedNodeStylePredicate" id="626"/>
+            </connections>
+        </arrayController>
+        <customView id="649" userLabel="Edge Style View">
+            <rect key="frame" x="0.0" y="0.0" width="193" height="208"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+            <subviews>
+                <button verticalHuggingPriority="750" id="655">
+                    <rect key="frame" x="6" y="4" width="26" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                    <buttonCell key="cell" type="smallSquare" bezelStyle="smallSquare" image="NSAddTemplate" imagePosition="overlaps" alignment="center" state="on" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="662">
+                        <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="system"/>
+                    </buttonCell>
+                    <connections>
+                        <action selector="addEdgeStyle:" target="-2" id="735"/>
+                    </connections>
+                </button>
+                <button verticalHuggingPriority="750" id="656">
+                    <rect key="frame" x="31" y="4" width="26" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                    <buttonCell key="cell" type="smallSquare" bezelStyle="smallSquare" image="NSRemoveTemplate" imagePosition="overlaps" alignment="center" state="on" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="661">
+                        <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="system"/>
+                    </buttonCell>
+                    <connections>
+                        <action selector="remove:" target="756" id="860"/>
+                        <binding destination="756" name="enabled" keyPath="canRemove" id="862"/>
+                    </connections>
+                </button>
+                <button verticalHuggingPriority="750" id="657">
+                    <rect key="frame" x="60" y="4" width="52" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                    <buttonCell key="cell" type="smallSquare" title="Apply" bezelStyle="smallSquare" alignment="center" state="on" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="660">
+                        <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="smallSystem"/>
+                    </buttonCell>
+                    <connections>
+                        <action selector="appleActiveEdgeStyle:" target="-2" id="737"/>
+                        <binding destination="756" name="enabled" keyPath="canRemove" id="864"/>
+                    </connections>
+                </button>
+                <button verticalHuggingPriority="750" id="658">
+                    <rect key="frame" x="111" y="4" width="52" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                    <buttonCell key="cell" type="smallSquare" title="Clear" bezelStyle="smallSquare" alignment="center" state="on" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="659">
+                        <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="smallSystem"/>
+                    </buttonCell>
+                    <connections>
+                        <action selector="clearActiveEdgeStyle:" target="-2" id="738"/>
+                    </connections>
+                </button>
+                <textField verticalHuggingPriority="750" id="669">
+                    <rect key="frame" x="6" y="185" width="57" height="14"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" sendsActionOnEndEditing="YES" alignment="left" title="Name" id="672">
+                        <font key="font" metaFont="smallSystemBold"/>
+                        <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                        <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
+                    </textFieldCell>
+                </textField>
+                <textField verticalHuggingPriority="750" id="670">
+                    <rect key="frame" x="69" y="183" width="119" height="19"/>
+                    <autoresizingMask key="autoresizingMask" widthSizable="YES" flexibleMinY="YES"/>
+                    <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" selectable="YES" editable="YES" sendsActionOnEndEditing="YES" state="on" borderStyle="bezel" drawsBackground="YES" id="671">
+                        <font key="font" metaFont="smallSystem"/>
+                        <color key="textColor" name="textColor" catalog="System" colorSpace="catalog"/>
+                        <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
+                    </textFieldCell>
+                    <connections>
+                        <binding destination="756" name="value" keyPath="selection.name" id="762"/>
+                    </connections>
+                </textField>
+                <popUpButton verticalHuggingPriority="750" id="682">
+                    <rect key="frame" x="59" y="155" width="77" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <popUpButtonCell key="cell" type="push" bezelStyle="rounded" alignment="left" lineBreakMode="truncatingTail" state="on" borderStyle="borderAndBezel" imageScaling="proportionallyDown" inset="2" selectedItem="685" id="683">
+                        <behavior key="behavior" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="system"/>
+                        <menu key="menu" title="Edge Decoration" id="684">
+                            <items>
+                                <menuItem state="on" image="ED_none" id="685">
+                                    <modifierMask key="keyEquivalentModifierMask"/>
+                                </menuItem>
+                                <menuItem image="ED_arrow" tag="1" id="694">
+                                    <modifierMask key="keyEquivalentModifierMask"/>
+                                </menuItem>
+                                <menuItem image="ED_tick" tag="2" id="686">
+                                    <modifierMask key="keyEquivalentModifierMask"/>
+                                </menuItem>
+                            </items>
+                        </menu>
+                    </popUpButtonCell>
+                    <connections>
+                        <binding destination="756" name="selectedTag" keyPath="selection.decorationStyle" id="814"/>
+                    </connections>
+                </popUpButton>
+                <textField verticalHuggingPriority="750" id="688">
+                    <rect key="frame" x="6" y="137" width="57" height="14"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" sendsActionOnEndEditing="YES" alignment="left" title="Category" id="691">
+                        <font key="font" metaFont="smallSystemBold"/>
+                        <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                        <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
+                    </textFieldCell>
+                </textField>
+                <comboBox verticalHuggingPriority="750" id="689">
+                    <rect key="frame" x="69" y="132" width="122" height="23"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <comboBoxCell key="cell" scrollable="YES" lineBreakMode="clipping" selectable="YES" editable="YES" sendsActionOnEndEditing="YES" borderStyle="bezel" drawsBackground="YES" completes="NO" numberOfVisibleItems="5" id="690">
+                        <font key="font" metaFont="system" size="10"/>
+                        <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                        <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
+                    </comboBoxCell>
+                    <connections>
+                        <binding destination="654" name="contentValues" keyPath="arrangedObjects.@distinctUnionOfObjects.category" id="787"/>
+                        <binding destination="756" name="value" keyPath="selection.category" previousBinding="787" id="788">
+                            <dictionary key="options">
+                                <string key="NSNullPlaceholder">uncategorized</string>
+                            </dictionary>
+                        </binding>
+                    </connections>
+                </comboBox>
+                <popUpButton verticalHuggingPriority="750" id="695">
+                    <rect key="frame" x="2" y="155" width="60" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <popUpButtonCell key="cell" type="push" bezelStyle="rounded" alignment="left" lineBreakMode="truncatingTail" state="on" borderStyle="borderAndBezel" imageScaling="proportionallyDown" inset="2" selectedItem="698" id="696">
+                        <behavior key="behavior" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="system"/>
+                        <menu key="menu" title="OtherViews" id="697">
+                            <items>
+                                <menuItem state="on" image="AH_none" id="698">
+                                    <modifierMask key="keyEquivalentModifierMask"/>
+                                </menuItem>
+                                <menuItem image="AH_plain_tail" tag="1" id="699">
+                                    <modifierMask key="keyEquivalentModifierMask"/>
+                                </menuItem>
+                                <menuItem image="AH_latex_tail" tag="2" id="700">
+                                    <modifierMask key="keyEquivalentModifierMask"/>
+                                </menuItem>
+                            </items>
+                        </menu>
+                    </popUpButtonCell>
+                    <connections>
+                        <binding destination="756" name="selectedTag" keyPath="selection.tailStyle" id="811"/>
+                    </connections>
+                </popUpButton>
+                <popUpButton verticalHuggingPriority="750" id="701">
+                    <rect key="frame" x="133" y="155" width="60" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <popUpButtonCell key="cell" type="push" bezelStyle="rounded" alignment="right" lineBreakMode="truncatingTail" state="on" borderStyle="borderAndBezel" imageScaling="proportionallyDown" inset="2" selectedItem="704" id="702">
+                        <behavior key="behavior" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="system"/>
+                        <menu key="menu" title="OtherViews" id="703">
+                            <items>
+                                <menuItem state="on" image="AH_none" id="704">
+                                    <modifierMask key="keyEquivalentModifierMask"/>
+                                </menuItem>
+                                <menuItem image="AH_plain_head" tag="1" id="706">
+                                    <modifierMask key="keyEquivalentModifierMask"/>
+                                </menuItem>
+                                <menuItem image="AH_latex_head" tag="2" id="705">
+                                    <modifierMask key="keyEquivalentModifierMask"/>
+                                </menuItem>
+                            </items>
+                        </menu>
+                    </popUpButtonCell>
+                    <connections>
+                        <binding destination="756" name="selectedTag" keyPath="selection.headStyle" id="817"/>
+                    </connections>
+                </popUpButton>
+                <scrollView autohidesScrollers="YES" horizontalLineScroll="19" horizontalPageScroll="10" verticalLineScroll="19" verticalPageScroll="10" usesPredominantAxisScrolling="NO" id="707">
+                    <rect key="frame" x="6" y="33" width="182" height="70"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <clipView key="contentView" id="jNZ-3P-r3y">
+                        <rect key="frame" x="1" y="1" width="180" height="68"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <tableView verticalHuggingPriority="750" allowsExpansionToolTips="YES" columnAutoresizingStyle="lastColumnOnly" columnSelection="YES" multipleSelection="NO" autosaveColumns="NO" id="711" userLabel="Table View">
+                                <rect key="frame" x="0.0" y="0.0" width="180" height="68"/>
+                                <autoresizingMask key="autoresizingMask"/>
+                                <size key="intercellSpacing" width="3" height="2"/>
+                                <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                                <color key="gridColor" name="gridColor" catalog="System" colorSpace="catalog"/>
+                                <tableColumns>
+                                    <tableColumn width="177" minWidth="40" maxWidth="1000" id="712">
+                                        <tableHeaderCell key="headerCell" lineBreakMode="truncatingTail" borderStyle="border" alignment="left">
+                                            <font key="font" metaFont="smallSystem"/>
+                                            <color key="textColor" name="headerTextColor" catalog="System" colorSpace="catalog"/>
+                                            <color key="backgroundColor" white="0.33333298560000002" alpha="1" colorSpace="calibratedWhite"/>
+                                        </tableHeaderCell>
+                                        <textFieldCell key="dataCell" lineBreakMode="truncatingTail" selectable="YES" editable="YES" alignment="left" title="Text Cell" id="715">
+                                            <font key="font" metaFont="system"/>
+                                            <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                                            <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                                        </textFieldCell>
+                                        <tableColumnResizingMask key="resizingMask" resizeWithTable="YES" userResizable="YES"/>
+                                        <connections>
+                                            <binding destination="756" name="value" keyPath="arrangedObjects.name" id="780"/>
+                                        </connections>
+                                    </tableColumn>
+                                </tableColumns>
+                                <connections>
+                                    <binding destination="756" name="content" keyPath="arrangedObjects" id="759"/>
+                                    <binding destination="756" name="selectionIndexes" keyPath="selectionIndexes" previousBinding="759" id="800"/>
+                                </connections>
+                            </tableView>
+                        </subviews>
+                        <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                    </clipView>
+                    <scroller key="horizontalScroller" hidden="YES" verticalHuggingPriority="750" horizontal="YES" id="710">
+                        <rect key="frame" x="1" y="73" width="143" height="15"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </scroller>
+                    <scroller key="verticalScroller" hidden="YES" verticalHuggingPriority="750" horizontal="NO" id="708">
+                        <rect key="frame" x="224" y="17" width="15" height="102"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </scroller>
+                </scrollView>
+                <textField verticalHuggingPriority="750" id="716">
+                    <rect key="frame" x="6" y="111" width="57" height="14"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" sendsActionOnEndEditing="YES" alignment="left" title="Show" id="720">
+                        <font key="font" metaFont="smallSystemBold"/>
+                        <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                        <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
+                    </textFieldCell>
+                </textField>
+                <popUpButton verticalHuggingPriority="750" id="717">
+                    <rect key="frame" x="66" y="105" width="125" height="26"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <popUpButtonCell key="cell" type="push" bezelStyle="rounded" alignment="left" lineBreakMode="truncatingTail" borderStyle="borderAndBezel" imageScaling="proportionallyDown" inset="2" id="718">
+                        <behavior key="behavior" lightByBackground="YES" lightByGray="YES"/>
+                        <font key="font" metaFont="smallSystem"/>
+                        <menu key="menu" title="OtherViews" id="719"/>
+                    </popUpButtonCell>
+                    <connections>
+                        <binding destination="654" name="contentValues" keyPath="arrangedObjects.@distinctUnionOfObjects.category" id="797">
+                            <dictionary key="options">
+                                <string key="NSNullPlaceholder">uncategorized</string>
+                                <bool key="NSInsertsNullPlaceholder" value="YES"/>
+                            </dictionary>
+                        </binding>
+                        <binding destination="-2" name="selectedValue" keyPath="displayedEdgeStyleCategory" previousBinding="797" id="798"/>
+                    </connections>
+                </popUpButton>
+            </subviews>
+        </customView>
+        <arrayController objectClassName="EdgeStyle" id="654" userLabel="Edge Style Array Controller">
+            <declaredKeys>
+                <string>name</string>
+                <string>headStyle</string>
+                <string>tailStyle</string>
+                <string>decorationStyle</string>
+                <string>category</string>
+            </declaredKeys>
+            <connections>
+                <binding destination="-2" name="contentArray" keyPath="edgeStyles" id="725"/>
+            </connections>
+        </arrayController>
+        <arrayController objectClassName="EdgeStyle" id="756" userLabel="Filtered Edge Style Array Controller">
+            <declaredKeys>
+                <string>name</string>
+                <string>headStyle</string>
+                <string>tailStyle</string>
+                <string>decorationStyle</string>
+                <string>category</string>
+            </declaredKeys>
+            <connections>
+                <binding destination="-2" name="contentArray" keyPath="edgeStyles" id="866"/>
+                <binding destination="-2" name="filterPredicate" keyPath="displayedEdgeStylePredicate" id="807"/>
+            </connections>
+        </arrayController>
+    </objects>
+    <resources>
+        <image name="AH_latex_head" width="26" height="12"/>
+        <image name="AH_latex_tail" width="26" height="12"/>
+        <image name="AH_none" width="26" height="12"/>
+        <image name="AH_plain_head" width="26" height="14"/>
+        <image name="AH_plain_tail" width="26" height="14"/>
+        <image name="ED_arrow" width="58" height="14"/>
+        <image name="ED_none" width="58" height="14"/>
+        <image name="ED_tick" width="58" height="14"/>
+        <image name="NSAddTemplate" width="8" height="8"/>
+        <image name="NSRemoveTemplate" width="8" height="8"/>
+        <image name="emblem-important" width="12.800000190734863" height="12.800000190734863"/>
+    </resources>
+</document>
+\ No newline at end of file
diff --git a/tikzit/English.lproj/TikzDocument.xib b/tikzit/English.lproj/TikzDocument.xib
index 53963d6..842b810 100644
--- a/tikzit/English.lproj/TikzDocument.xib
+++ b/tikzit/English.lproj/TikzDocument.xib
@@ -1,864 +1,161 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<archive type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="8.00">
-	<data>
-		<int key="IBDocument.SystemTarget">1080</int>
-		<string key="IBDocument.SystemVersion">12C60</string>
-		<string key="IBDocument.InterfaceBuilderVersion">2843</string>
-		<string key="IBDocument.AppKitVersion">1187.34</string>
-		<string key="IBDocument.HIToolboxVersion">625.00</string>
-		<object class="NSMutableDictionary" key="IBDocument.PluginVersions">
-			<string key="NS.key.0">com.apple.InterfaceBuilder.CocoaPlugin</string>
-			<string key="NS.object.0">2843</string>
-		</object>
-		<array key="IBDocument.IntegratedClassDependencies">
-			<string>NSButton</string>
-			<string>NSButtonCell</string>
-			<string>NSCustomObject</string>
-			<string>NSCustomView</string>
-			<string>NSScrollView</string>
-			<string>NSScroller</string>
-			<string>NSSplitView</string>
-			<string>NSTextField</string>
-			<string>NSTextFieldCell</string>
-			<string>NSTextView</string>
-			<string>NSUserDefaultsController</string>
-			<string>NSView</string>
-			<string>NSWindowTemplate</string>
-		</array>
-		<array key="IBDocument.PluginDependencies">
-			<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
-		</array>
-		<object class="NSMutableDictionary" key="IBDocument.Metadata">
-			<string key="NS.key.0">PluginDependencyRecalculationVersion</string>
-			<integer value="1" key="NS.object.0"/>
-		</object>
-		<array class="NSMutableArray" key="IBDocument.RootObjects" id="580458321">
-			<object class="NSCustomObject" id="512844837">
-				<string key="NSClassName">TikzWindowController</string>
-			</object>
-			<object class="NSCustomObject" id="613418571">
-				<string key="NSClassName">FirstResponder</string>
-			</object>
-			<object class="NSWindowTemplate" id="275939982">
-				<int key="NSWindowStyleMask">15</int>
-				<int key="NSWindowBacking">2</int>
-				<string key="NSWindowRect">{{99, 420}, {447, 382}}</string>
-				<int key="NSWTFlags">1881669632</int>
-				<string key="NSWindowTitle">Window</string>
-				<string key="NSWindowClass">NSWindow</string>
-				<string key="NSViewClass">View</string>
-				<nil key="NSUserInterfaceItemIdentifier"/>
-				<string key="NSWindowContentMinSize">{94, 86}</string>
-				<object class="NSView" key="NSWindowView" id="568628114">
-					<reference key="NSNextResponder"/>
-					<int key="NSvFlags">256</int>
-					<array class="NSMutableArray" key="NSSubviews">
-						<object class="NSSplitView" id="129838346">
-							<reference key="NSNextResponder" ref="568628114"/>
-							<int key="NSvFlags">274</int>
-							<array class="NSMutableArray" key="NSSubviews">
-								<object class="NSCustomView" id="664387074">
-									<reference key="NSNextResponder" ref="129838346"/>
-									<int key="NSvFlags">256</int>
-									<array class="NSMutableArray" key="NSSubviews">
-										<object class="NSCustomView" id="1058910169">
-											<reference key="NSNextResponder" ref="664387074"/>
-											<int key="NSvFlags">266</int>
-											<array class="NSMutableArray" key="NSSubviews">
-												<object class="NSButton" id="908350871">
-													<reference key="NSNextResponder" ref="1058910169"/>
-													<int key="NSvFlags">265</int>
-													<array class="NSMutableArray" key="NSSubviews"/>
-													<string key="NSFrame">{{425, 21}, {17, 19}}</string>
-													<reference key="NSSuperview" ref="1058910169"/>
-													<reference key="NSWindow"/>
-													<reference key="NSNextKeyView"/>
-													<bool key="NSViewIsLayerTreeHost">YES</bool>
-													<string key="NSReuseIdentifierKey">_NS:1574</string>
-													<bool key="NSEnabled">YES</bool>
-													<object class="NSButtonCell" key="NSCell" id="869516400">
-														<int key="NSCellFlags">-2080374784</int>
-														<int key="NSCellFlags2">134217728</int>
-														<string key="NSContents"/>
-														<object class="NSFont" key="NSSupport">
-															<string key="NSName">LucidaGrande</string>
-															<double key="NSSize">13</double>
-															<int key="NSfFlags">1044</int>
-														</object>
-														<string key="NSCellIdentifier">_NS:1574</string>
-														<reference key="NSControlView" ref="908350871"/>
-														<int key="NSButtonFlags">105119744</int>
-														<int key="NSButtonFlags2">160</int>
-														<object class="NSCustomResource" key="NSNormalImage">
-															<string key="NSClassName">NSImage</string>
-															<string key="NSResourceName">NSStopProgressFreestandingTemplate</string>
-														</object>
-														<string key="NSAlternateContents"/>
-														<string key="NSKeyEquivalent"/>
-														<int key="NSPeriodicDelay">200</int>
-														<int key="NSPeriodicInterval">25</int>
-													</object>
-													<bool key="NSAllowsLogicalLayoutDirection">NO</bool>
-												</object>
-												<object class="NSTextField" id="664005102">
-													<reference key="NSNextResponder" ref="1058910169"/>
-													<int key="NSvFlags">270</int>
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diff --git a/tikzit/TikZiT.xcodeproj/project.pbxproj b/tikzit/TikZiT.xcodeproj/project.pbxproj
index 3f4b2a5..04a7f3f 100644
--- a/tikzit/TikZiT.xcodeproj/project.pbxproj
+++ b/tikzit/TikZiT.xcodeproj/project.pbxproj
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 		5585E5C2117F681800124513 /* NodeStyle+Coder.m in Sources */ = {isa = PBXBuildFile; fileRef = 5585E5C1117F681800124513 /* NodeStyle+Coder.m */; };
-		5589A9AF11C500060064D310 /* tikzlexer.lm in Sources */ = {isa = PBXBuildFile; fileRef = 5589A9AA11C500060064D310 /* tikzlexer.lm */; };
-		5589A9B011C500060064D310 /* tikzparser.ym in Sources */ = {isa = PBXBuildFile; fileRef = 5589A9AB11C500060064D310 /* tikzparser.ym */; };
-		5589A9FF11C51E780064D310 /* TikzGraphAssembler.m in Sources */ = {isa = PBXBuildFile; fileRef = 5589A9FE11C51E780064D310 /* TikzGraphAssembler.m */; };
+		5589A9FF11C51E780064D310 /* TikzGraphAssembler.m in Sources */ = {isa = PBXBuildFile; fileRef = 5589A9FE11C51E780064D310 /* TikzGraphAssembler.m */; settings = {COMPILER_FLAGS = "-fno-objc-arc"; }; };
 		5589AA6C11C542D30064D310 /* TikzGraphAssembler.m in Sources */ = {isa = PBXBuildFile; fileRef = 5589A9FE11C51E780064D310 /* TikzGraphAssembler.m */; };
 		5589AA6D11C542D30064D310 /* tikzlexer.lm in Sources */ = {isa = PBXBuildFile; fileRef = 5589A9AA11C500060064D310 /* tikzlexer.lm */; };
 		5589AA6E11C542D30064D310 /* tikzparser.ym in Sources */ = {isa = PBXBuildFile; fileRef = 5589A9AB11C500060064D310 /* tikzparser.ym */; };
@@ -133,6 +131,10 @@
 		7F6E2C8C16B00ABA00BFE20D /* SFBInspectors.framework in CopyFiles */ = {isa = PBXBuildFile; fileRef = 55CA98D412EF8FCE008F0368 /* SFBInspectors.framework */; };
 		7F73438A184AC559002897D0 /* DraggablePDFView.m in Sources */ = {isa = PBXBuildFile; fileRef = 7F734389184AC559002897D0 /* DraggablePDFView.m */; };
 		7F781C1A16B5DE1400239826 /* ParseErrorView.m in Sources */ = {isa = PBXBuildFile; fileRef = 7F781C1916B5DE1400239826 /* ParseErrorView.m */; };
+		7F7B6DED18DE0C9E004F6CA8 /* tikzlexer.m in Sources */ = {isa = PBXBuildFile; fileRef = 7F7B6DEA18DE0C9E004F6CA8 /* tikzlexer.m */; settings = {COMPILER_FLAGS = "-fno-objc-arc"; }; };
+		7F7B6DEE18DE0C9E004F6CA8 /* tikzparser.m in Sources */ = {isa = PBXBuildFile; fileRef = 7F7B6DEC18DE0C9E004F6CA8 /* tikzparser.m */; settings = {COMPILER_FLAGS = "-fno-objc-arc"; }; };
+		7F7B6DF418DE0D7A004F6CA8 /* CustomNodeCellView.m in Sources */ = {isa = PBXBuildFile; fileRef = 7F7B6DF118DE0D7A004F6CA8 /* CustomNodeCellView.m */; };
+		7F7B6DF518DE0D7A004F6CA8 /* CustomNodeController.m in Sources */ = {isa = PBXBuildFile; fileRef = 7F7B6DF318DE0D7A004F6CA8 /* CustomNodeController.m */; };
 		7F90E88616DD29600069EBCD /* NSString+Tikz.m in Sources */ = {isa = PBXBuildFile; fileRef = 7F90E88516DD29600069EBCD /* NSString+Tikz.m */; };
 		7F90E88D16DD47540069EBCD /* PreferenceController.m in Sources */ = {isa = PBXBuildFile; fileRef = 7F90E88B16DD47540069EBCD /* PreferenceController.m */; };
 		7F90E88E16DD47540069EBCD /* Preferences.xib in Resources */ = {isa = PBXBuildFile; fileRef = 7F90E88C16DD47540069EBCD /* Preferences.xib */; };
@@ -141,37 +143,14 @@
 		7F938530184D178B00FAED38 /* engine.png in Resources */ = {isa = PBXBuildFile; fileRef = 7F93852F184D178B00FAED38 /* engine.png */; };
 		7F938532184D184700FAED38 /* preamble.png in Resources */ = {isa = PBXBuildFile; fileRef = 7F938531184D184700FAED38 /* preamble.png */; };
 		7FB9BFEE16B57C2E00773146 /* TikzFormatter.m in Sources */ = {isa = PBXBuildFile; fileRef = 7FB9BFED16B57C2E00773146 /* TikzFormatter.m */; };
+		7FD5D44B18E1CB5300E2A930 /* CustomNodes.xib in Resources */ = {isa = PBXBuildFile; fileRef = 7FD5D44918E1CB5300E2A930 /* CustomNodes.xib */; };
+		7FD5D44D18E1CC0B00E2A930 /* customshape.png in Resources */ = {isa = PBXBuildFile; fileRef = 7FD5D44C18E1CC0B00E2A930 /* customshape.png */; };
 		7FEED45716B1A7C500B056CB /* StyleManager.m in Sources */ = {isa = PBXBuildFile; fileRef = 7FEED45616B1A7C500B056CB /* StyleManager.m */; };
 		8D15AC2C0486D014006FF6A4 /* Credits.rtf in Resources */ = {isa = PBXBuildFile; fileRef = 2A37F4B9FDCFA73011CA2CEA /* Credits.rtf */; };
 		8D15AC2F0486D014006FF6A4 /* InfoPlist.strings in Resources */ = {isa = PBXBuildFile; fileRef = 089C165FFE840EACC02AAC07 /* InfoPlist.strings */; };
 		8D15AC340486D014006FF6A4 /* Cocoa.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 1058C7A7FEA54F5311CA2CBB /* Cocoa.framework */; };
 /* End PBXBuildFile section */
 
-/* Begin PBXBuildRule section */
-		74112B2117CE36C500B9CF16 /* PBXBuildRule */ = {
-			isa = PBXBuildRule;
-			compilerSpec = com.apple.compilers.proxy.script;
-			fileType = sourcecode.lex;
-			isEditable = 1;
-			outputFiles = (
-				tikzlexer.m,
-				tikzlexer.h,
-			);
-			script = "cd src\nflex -o common/${INPUT_FILE_BASE}.m common/${INPUT_FILE_BASE}.lm\ncp common/${INPUT_FILE_BASE}.m common/${INPUT_FILE_BASE}.h ${DERIVED_SOURCES_DIR}";
-		};
-		74E535F317CE329A0040610D /* PBXBuildRule */ = {
-			isa = PBXBuildRule;
-			compilerSpec = com.apple.compilers.proxy.script;
-			fileType = sourcecode.yacc;
-			isEditable = 1;
-			outputFiles = (
-				tikzparser.h,
-				tikzparser.m,
-			);
-			script = "cd src\nbison --defines=common/${INPUT_FILE_BASE}.h --output=common/${INPUT_FILE_BASE}.m common/${INPUT_FILE_BASE}.ym\ncp common/${INPUT_FILE_BASE}.h common/${INPUT_FILE_BASE}.m ${DERIVED_SOURCES_DIR}\n";
-		};
-/* End PBXBuildRule section */
-
 /* Begin PBXContainerItemProxy section */
 		5504C91A11D36CD5002A1478 /* PBXContainerItemProxy */ = {
 			isa = PBXContainerItemProxy;
@@ -383,6 +362,14 @@
 		7F734389184AC559002897D0 /* DraggablePDFView.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = DraggablePDFView.m; path = src/osx/DraggablePDFView.m; sourceTree = "<group>"; };
 		7F781C1816B5DE1400239826 /* ParseErrorView.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = ParseErrorView.h; path = src/osx/ParseErrorView.h; sourceTree = "<group>"; };
 		7F781C1916B5DE1400239826 /* ParseErrorView.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = ParseErrorView.m; path = src/osx/ParseErrorView.m; sourceTree = "<group>"; };
+		7F7B6DE918DE0C9E004F6CA8 /* tikzlexer.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = tikzlexer.h; path = xbuild/TikZiT.build/Debug/TikZiT.build/DerivedSources/tikzlexer.h; sourceTree = "<group>"; };
+		7F7B6DEA18DE0C9E004F6CA8 /* tikzlexer.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = tikzlexer.m; path = xbuild/TikZiT.build/Debug/TikZiT.build/DerivedSources/tikzlexer.m; sourceTree = "<group>"; };
+		7F7B6DEB18DE0C9E004F6CA8 /* tikzparser.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = tikzparser.h; path = xbuild/TikZiT.build/Debug/TikZiT.build/DerivedSources/tikzparser.h; sourceTree = "<group>"; };
+		7F7B6DEC18DE0C9E004F6CA8 /* tikzparser.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = tikzparser.m; path = xbuild/TikZiT.build/Debug/TikZiT.build/DerivedSources/tikzparser.m; sourceTree = "<group>"; };
+		7F7B6DF018DE0D7A004F6CA8 /* CustomNodeCellView.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = CustomNodeCellView.h; path = src/osx/CustomNodeCellView.h; sourceTree = "<group>"; };
+		7F7B6DF118DE0D7A004F6CA8 /* CustomNodeCellView.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = CustomNodeCellView.m; path = src/osx/CustomNodeCellView.m; sourceTree = "<group>"; };
+		7F7B6DF218DE0D7A004F6CA8 /* CustomNodeController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = CustomNodeController.h; path = src/osx/CustomNodeController.h; sourceTree = "<group>"; };
+		7F7B6DF318DE0D7A004F6CA8 /* CustomNodeController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = CustomNodeController.m; path = src/osx/CustomNodeController.m; sourceTree = "<group>"; };
 		7F90E88416DD29600069EBCD /* NSString+Tikz.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = "NSString+Tikz.h"; path = "src/common/NSString+Tikz.h"; sourceTree = "<group>"; };
 		7F90E88516DD29600069EBCD /* NSString+Tikz.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = "NSString+Tikz.m"; path = "src/common/NSString+Tikz.m"; sourceTree = "<group>"; };
 		7F90E88A16DD47540069EBCD /* PreferenceController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = PreferenceController.h; path = src/osx/PreferenceController.h; sourceTree = "<group>"; };
@@ -394,6 +381,8 @@
 		7F938531184D184700FAED38 /* preamble.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = preamble.png; sourceTree = "<group>"; };
 		7FB9BFEC16B57C2E00773146 /* TikzFormatter.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = TikzFormatter.h; path = src/osx/TikzFormatter.h; sourceTree = "<group>"; };
 		7FB9BFED16B57C2E00773146 /* TikzFormatter.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = TikzFormatter.m; path = src/osx/TikzFormatter.m; sourceTree = "<group>"; };
+		7FD5D44A18E1CB5300E2A930 /* English */ = {isa = PBXFileReference; lastKnownFileType = file.xib; name = English; path = English.lproj/CustomNodes.xib; sourceTree = "<group>"; };
+		7FD5D44C18E1CC0B00E2A930 /* customshape.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = customshape.png; sourceTree = "<group>"; };
 		7FEED45516B1A7C400B056CB /* StyleManager.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = StyleManager.h; path = src/common/StyleManager.h; sourceTree = "<group>"; };
 		7FEED45616B1A7C500B056CB /* StyleManager.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = StyleManager.m; path = src/common/StyleManager.m; sourceTree = "<group>"; };
 		8D15AC360486D014006FF6A4 /* TikZiT-Info.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; path = "TikZiT-Info.plist"; sourceTree = "<group>"; };
@@ -526,6 +515,7 @@
 				55D945701165904F0044178C /* tikzitdoc.icns */,
 				55D945711165904F0044178C /* tikzit.icns */,
 				7F90E88C16DD47540069EBCD /* Preferences.xib */,
+				7FD5D44918E1CB5300E2A930 /* CustomNodes.xib */,
 				7F18A322184C599100BC3081 /* UpdatePreferencePanel.xib */,
 				55391AF713D3250F007DBE71 /* Preamble.xib */,
 				55391AF513D324FE007DBE71 /* Preview.xib */,
@@ -631,6 +621,7 @@
 		55D946071165922F0044178C /* Parser */ = {
 			isa = PBXGroup;
 			children = (
+				7F7B6DE218DE0BE1004F6CA8 /* Generated sources */,
 				5589A9AA11C500060064D310 /* tikzlexer.lm */,
 				5589A9AB11C500060064D310 /* tikzparser.ym */,
 				5589A9FD11C51E780064D310 /* TikzGraphAssembler.h */,
@@ -654,9 +645,9 @@
 				55D2E0B11186ED950060B4EC /* Graph+Coder.m */,
 				558F18BD117B031C009863B2 /* GraphChange.h */,
 				558F18BE117B031C009863B2 /* GraphChange.m */,
-				558F18BF117B031C009863B2 /* GraphElementData.h */,
 				7FEED45516B1A7C400B056CB /* StyleManager.h */,
 				7FEED45616B1A7C500B056CB /* StyleManager.m */,
+				558F18BF117B031C009863B2 /* GraphElementData.h */,
 				558F18C0117B031C009863B2 /* GraphElementData.m */,
 				558F18C1117B031C009863B2 /* Node.h */,
 				558F18C2117B031C009863B2 /* Node.m */,
@@ -744,6 +735,7 @@
 		7F18A31E184C563800BC3081 /* Preferences */ = {
 			isa = PBXGroup;
 			children = (
+				7F7B6DEF18DE0D70004F6CA8 /* CustomNode */,
 				5573B90D11DA231A00B5DC5D /* PreambleController.h */,
 				5573B90E11DA231A00B5DC5D /* PreambleController.m */,
 				7F90E88A16DD47540069EBCD /* PreferenceController.h */,
@@ -754,11 +746,34 @@
 			name = Preferences;
 			sourceTree = "<group>";
 		};
+		7F7B6DE218DE0BE1004F6CA8 /* Generated sources */ = {
+			isa = PBXGroup;
+			children = (
+				7F7B6DE918DE0C9E004F6CA8 /* tikzlexer.h */,
+				7F7B6DEA18DE0C9E004F6CA8 /* tikzlexer.m */,
+				7F7B6DEB18DE0C9E004F6CA8 /* tikzparser.h */,
+				7F7B6DEC18DE0C9E004F6CA8 /* tikzparser.m */,
+			);
+			name = "Generated sources";
+			sourceTree = "<group>";
+		};
+		7F7B6DEF18DE0D70004F6CA8 /* CustomNode */ = {
+			isa = PBXGroup;
+			children = (
+				7F7B6DF018DE0D7A004F6CA8 /* CustomNodeCellView.h */,
+				7F7B6DF118DE0D7A004F6CA8 /* CustomNodeCellView.m */,
+				7F7B6DF218DE0D7A004F6CA8 /* CustomNodeController.h */,
+				7F7B6DF318DE0D7A004F6CA8 /* CustomNodeController.m */,
+			);
+			name = CustomNode;
+			sourceTree = "<group>";
+		};
 		7F93852C184D175400FAED38 /* Icons */ = {
 			isa = PBXGroup;
 			children = (
 				7F93852F184D178B00FAED38 /* engine.png */,
 				7F938531184D184700FAED38 /* preamble.png */,
+				7FD5D44C18E1CC0B00E2A930 /* customshape.png */,
 				7F93852D184D176E00FAED38 /* updates.png */,
 			);
 			name = Icons;
@@ -801,12 +816,12 @@
 				559EFA5511C7D4DD00D020F4 /* Copy Frameworks */,
 				8D15AC2B0486D014006FF6A4 /* Resources */,
 				55652E6613E1FD080023F4C6 /* Copy Shapes */,
+				7F7B6DE018DE02AC004F6CA8 /* Run Flex */,
+				7F7B6DE118DE0A6E004F6CA8 /* Run Bison */,
 				8D15AC300486D014006FF6A4 /* Sources */,
 				8D15AC330486D014006FF6A4 /* Frameworks */,
 			);
 			buildRules = (
-				74112B2117CE36C500B9CF16 /* PBXBuildRule */,
-				74E535F317CE329A0040610D /* PBXBuildRule */,
 			);
 			dependencies = (
 			);
@@ -856,6 +871,7 @@
 				1DDD582C0DA1D0D100B32029 /* TikzDocument.xib in Resources */,
 				7F938530184D178B00FAED38 /* engine.png in Resources */,
 				1DDD582D0DA1D0D100B32029 /* MainMenu.xib in Resources */,
+				7FD5D44D18E1CC0B00E2A930 /* customshape.png in Resources */,
 				55D945721165904F0044178C /* tikzitdoc.icns in Resources */,
 				55D945731165904F0044178C /* tikzit.icns in Resources */,
 				556979431168747B007E5703 /* StylePalette.xib in Resources */,
@@ -879,6 +895,7 @@
 				55397C8A1449AB91006942FB /* AH_none.png in Resources */,
 				55397C8B1449AB91006942FB /* AH_plain_tail.png in Resources */,
 				55397C8D1449ABFC006942FB /* AH_latex_tail.png in Resources */,
+				7FD5D44B18E1CB5300E2A930 /* CustomNodes.xib in Resources */,
 				55397C901449AC7C006942FB /* AH_latex_head.png in Resources */,
 				55397C911449AC7C006942FB /* AH_plain_head.png in Resources */,
 				7F18A323184C599100BC3081 /* UpdatePreferencePanel.xib in Resources */,
@@ -889,6 +906,43 @@
 		};
 /* End PBXResourcesBuildPhase section */
 
+/* Begin PBXShellScriptBuildPhase section */
+		7F7B6DE018DE02AC004F6CA8 /* Run Flex */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+				"$(SRCROOT)/src/common/tikzlexer.lm",
+			);
+			name = "Run Flex";
+			outputPaths = (
+				"$(DERIVED_SOURCES_DIR)/tikzlexer.m",
+				"$(DERIVED_SOURCES_DIR)/tikzlexer.h",
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "cd ${SRCROOT}/src/\nexport INPUT_FILE_BASE=`basename \"${SCRIPT_INPUT_FILE_0}\" .lm`\nflex -o common/${INPUT_FILE_BASE}.m common/${INPUT_FILE_BASE}.lm\nmv common/${INPUT_FILE_BASE}.m common/${INPUT_FILE_BASE}.h ${DERIVED_SOURCES_DIR}\n";
+		};
+		7F7B6DE118DE0A6E004F6CA8 /* Run Bison */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+				"$(SRCROOT)/src/common/tikzparser.ym",
+			);
+			name = "Run Bison";
+			outputPaths = (
+				"$(DERIVED_SOURCES_DIR)/tikzparser.m",
+				"$(DERIVED_SOURCES_DIR)/tikzparser.h",
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "cd ${SRCROOT}/src/\nexport INPUT_FILE_BASE=`basename \"${SCRIPT_INPUT_FILE_0}\" .ym`\nbison --defines=common/${INPUT_FILE_BASE}.h --output=common/${INPUT_FILE_BASE}.m common/${INPUT_FILE_BASE}.ym\nmv common/${INPUT_FILE_BASE}.m common/${INPUT_FILE_BASE}.h ${DERIVED_SOURCES_DIR}";
+		};
+/* End PBXShellScriptBuildPhase section */
+
 /* Begin PBXSourcesBuildPhase section */
 		5589AA6211C5429C0064D310 /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
@@ -933,9 +987,12 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				7F7B6DEE18DE0C9E004F6CA8 /* tikzparser.m in Sources */,
+				7F7B6DED18DE0C9E004F6CA8 /* tikzlexer.m in Sources */,
 				558F18C5117B031C009863B2 /* Edge.m in Sources */,
 				558F18C6117B031C009863B2 /* Graph.m in Sources */,
 				558F18C7117B031C009863B2 /* GraphChange.m in Sources */,
+				7F7B6DF418DE0D7A004F6CA8 /* CustomNodeCellView.m in Sources */,
 				558F18C8117B031C009863B2 /* GraphElementData.m in Sources */,
 				558F18C9117B031C009863B2 /* Node.m in Sources */,
 				558F18CA117B031C009863B2 /* NodeStyle.m in Sources */,
@@ -958,9 +1015,8 @@
 				55F9585C1181B09600F99434 /* PickSupport.m in Sources */,
 				55F9585D1181B09600F99434 /* Transformer.m in Sources */,
 				55D2E0B21186ED950060B4EC /* Graph+Coder.m in Sources */,
-				5589A9AF11C500060064D310 /* tikzlexer.lm in Sources */,
-				5589A9B011C500060064D310 /* tikzparser.ym in Sources */,
 				5589A9FF11C51E780064D310 /* TikzGraphAssembler.m in Sources */,
+				7F7B6DF518DE0D7A004F6CA8 /* CustomNodeController.m in Sources */,
 				5589AD4411C633EE0064D310 /* SelectBoxLayer.m in Sources */,
 				559EFB6811CB88E300D020F4 /* ColorRGB.m in Sources */,
 				5573B8C211D9FD3200B5DC5D /* PreviewController.m in Sources */,
@@ -1078,6 +1134,14 @@
 			name = UserDefaults.plist;
 			sourceTree = "<group>";
 		};
+		7FD5D44918E1CB5300E2A930 /* CustomNodes.xib */ = {
+			isa = PBXVariantGroup;
+			children = (
+				7FD5D44A18E1CB5300E2A930 /* English */,
+			);
+			name = CustomNodes.xib;
+			sourceTree = "<group>";
+		};
 /* End PBXVariantGroup section */
 
 /* Begin XCBuildConfiguration section */
@@ -1137,6 +1201,8 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
+				CLANG_ENABLE_OBJC_ARC = YES;
 				COMBINE_HIDPI_IMAGES = YES;
 				COPY_PHASE_STRIP = NO;
 				FRAMEWORK_SEARCH_PATHS = (
@@ -1162,6 +1228,8 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
+				CLANG_ENABLE_OBJC_ARC = YES;
 				COMBINE_HIDPI_IMAGES = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				FRAMEWORK_SEARCH_PATHS = (
@@ -1186,7 +1254,6 @@
 			buildSettings = {
 				ARCHS = "$(ARCHS_STANDARD_32_64_BIT)";
 				GCC_C_LANGUAGE_STANDARD = gnu99;
-				GCC_ENABLE_OBJC_GC = required;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
@@ -1206,7 +1273,6 @@
 			buildSettings = {
 				ARCHS = "$(ARCHS_STANDARD_32_64_BIT)";
 				GCC_C_LANGUAGE_STANDARD = gnu99;
-				GCC_ENABLE_OBJC_GC = required;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				HEADER_SEARCH_PATHS = "";
diff --git a/tikzit/TikZiT.xcodeproj/project.xcworkspace/xcshareddata/TikZiT.xccheckout b/tikzit/TikZiT.xcodeproj/project.xcworkspace/xcshareddata/TikZiT.xccheckout
new file mode 100644
index 0000000..c3ec4fe
--- /dev/null
+++ b/tikzit/TikZiT.xcodeproj/project.xcworkspace/xcshareddata/TikZiT.xccheckout
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDESourceControlProjectFavoriteDictionaryKey</key>
+	<false/>
+	<key>IDESourceControlProjectIdentifier</key>
+	<string>26857C1F-E0FE-4FFB-BDAC-44158C649772</string>
+	<key>IDESourceControlProjectOriginsDictionary</key>
+	<dict>
+		<key>F6FA2C351D428A0F1026539971510A626DEEFF59</key>
+		<string>https://github.com/tikzit/tikzit.git</string>
+	</dict>
+	<key>IDESourceControlProjectRelativeInstallPathDictionary</key>
+	<dict>
+		<key>F6FA2C351D428A0F1026539971510A626DEEFF59</key>
+		<string>TikZiT/</string>
+	</dict>
+	<key>IDESourceControlProjectURL</key>
+	<string>https://github.com/tikzit/tikzit.git</string>
+	<key>IDESourceControlProjectVersion</key>
+	<integer>111</integer>
+	<key>IDESourceControlProjectWCCIdentifier</key>
+	<string>F6FA2C351D428A0F1026539971510A626DEEFF59</string>
+	<key>IDESourceControlProjectWCConfigurations</key>
+	<array>
+		<dict>
+			<key>IDESourceControlRepositoryExtensionIdentifierKey</key>
+			<string>public.vcs.git</string>
+			<key>IDESourceControlWCCIdentifierKey</key>
+			<string>F6FA2C351D428A0F1026539971510A626DEEFF59</string>
+			<key>IDESourceControlWCCName</key>
+			<string>TikZiT</string>
+		</dict>
+	</array>
+</dict>
+</plist>
diff --git a/tikzit/customshape.png b/tikzit/customshape.png
new file mode 100755
index 0000000..cff8275
--- /dev/null
+++ b/tikzit/customshape.png
diff --git a/tikzit/src/common/ColorRGB.m b/tikzit/src/common/ColorRGB.m
index c108cfe..840d716 100644
--- a/tikzit/src/common/ColorRGB.m
+++ b/tikzit/src/common/ColorRGB.m
@@ -25,7 +25,11 @@
 #import "util.h"
 
 typedef struct {
-	NSString *name;
+#if __has_feature(objc_arc)
+    __unsafe_unretained NSString *name;
+#else
+    NSString *name;
+#endif
 	unsigned short r, g, b;
 } ColorRGBEntry;
 
@@ -278,17 +282,29 @@ static NSMapTable *colorHash = nil;
 
 + (ColorRGB*)colorWithRed:(unsigned short)r green:(unsigned short)g blue:(unsigned short)b {
 	ColorRGB *col = [[ColorRGB alloc] initWithRed:r green:g blue:b];
-	return [col autorelease];
+#if __has_feature(objc_arc)
+    return col;
+#else
+    return [col autorelease];
+#endif
 }
 
 
 + (ColorRGB*)colorWithFloatRed:(float)r green:(float)g blue:(float)b {
 	ColorRGB *col = [[ColorRGB alloc] initWithFloatRed:r green:g blue:b];
-	return [col autorelease];
+#if __has_feature(objc_arc)
+    return col;
+#else
+    return [col autorelease];
+#endif
 }
 
 + (ColorRGB*) colorWithRColor:(RColor)color {
+#if __has_feature(objc_arc)
+    return [[self alloc] initWithRColor:color];
+#else
     return [[[self alloc] initWithRColor:color] autorelease];
+#endif
 }
 
 + (void)makeColorHash {
@@ -300,13 +316,17 @@ static NSMapTable *colorHash = nil;
 												 blue:kColors[i].b];
 		[h setObject:kColors[i].name forKey:col];
 		//NSLog(@"adding color %@ (%d)", kColors[i].name, [col hash]);
+#if ! __has_feature(objc_arc)
 		[col release];
+#endif
 	}
 	colorHash = h;
 }
 
 + (void)releaseColorHash {
+#if ! __has_feature(objc_arc)
 	[colorHash release];
+#endif
 }
 
 - (void)setToClosestHashed {
diff --git a/tikzit/src/common/Edge.m b/tikzit/src/common/Edge.m
index ba80aef..0c88e9d 100644
--- a/tikzit/src/common/Edge.m
+++ b/tikzit/src/common/Edge.m
@@ -72,7 +72,11 @@
 	}
 	
 	// if we didn't find a style, fill in a default one
+#if __has_feature(objc_arc)
+    style = [EdgeStyle defaultEdgeStyleWithName:style_name];
+#else
 	style = [[EdgeStyle defaultEdgeStyleWithName:style_name] retain];
+#endif
 	return NO;
 }
 
@@ -318,8 +322,12 @@
 - (EdgeStyle*)style {return style;}
 - (void)setStyle:(EdgeStyle*)s {
 	if (style != s) {
+#if __has_feature(objc_arc)
+        style = s;
+#else
 		[style release];
 		style = [s retain];
+#endif
 	}
 }
 
@@ -335,9 +343,13 @@
 			[self setSourceAnchor:@""];
 		}
 
+#if __has_feature(objc_arc)
+        source = s;
+#else
 		[source release];
 		source = [s retain];
-		
+#endif
+        
 		if (source==target) {
 			bendMode = EdgeBendModeInOut;
 			weight = 1.0f;
@@ -365,9 +377,13 @@
 			[self setTargetAnchor:@""];
 		}
 
+#if __has_feature(objc_arc)
+        target = t;
+#else
 		[target release];
 		target = [t retain];
-		
+#endif
+        
 		if (source==target) {
 			bendMode = EdgeBendModeInOut;
 			weight = 1.0f;
@@ -422,8 +438,12 @@
     [self willChangeValueForKey:@"hasEdgeNode"];
 	if (edgeNode != n) {
         hasEdgeNode = (n != nil);
+#if __has_feature(objc_arc)
+        edgeNode = n;
+#else
 		[edgeNode release];
 		edgeNode = [n retain];
+#endif
 		// don't set dirty bit, because control points don't need update
 	}
     [self didChangeValueForKey:@"edgeNode"];
@@ -450,7 +470,9 @@
     }else{
         sourceAnchor = @"";
     }
+#if ! __has_feature(objc_arc)
 	[oldSourceAnchor release];
+#endif
 }
 
 - (NSString*) targetAnchor { return targetAnchor; }
@@ -461,7 +483,9 @@
     }else{
         targetAnchor = @"";
     }
+#if ! __has_feature(objc_arc)
 	[oldTargetAnchor release];
+#endif
 }
 
 @synthesize data;
@@ -558,11 +582,15 @@
 - (void)setPropertiesFromEdge:(Edge*)e {
     Node *en = [[e edgeNode] copy];
 	[self setEdgeNode:en];
+#if ! __has_feature(objc_arc)
     [en release];
+#endif
     
     GraphElementData *d = [[e data] copy];
 	[self setData:d];
+#if ! __has_feature(objc_arc)
     [d release];
+#endif
     
     [self setStyle:[e style]];
 	[self setBend:[e bend]];
@@ -664,6 +692,7 @@
 - (void)reverse {
     Node *n;
     float f;
+    NSString *a;
     
     n = source;
     source = target;
@@ -673,6 +702,10 @@
     inAngle = outAngle;
     outAngle = f;
     
+    a = sourceAnchor;
+    sourceAnchor = targetAnchor;
+    targetAnchor = a;
+    
     [self setBend:-bend];
     
     dirty = YES;
@@ -683,12 +716,14 @@
 				forKeyPath:@"style"];
 	[target removeObserver:self
 				forKeyPath:@"style"];
+#if ! __has_feature(objc_arc)
 	[source release];
 	[target release];
 	[data release];
     [sourceAnchor release];
     [targetAnchor release];
 	[super dealloc];
+#endif
 }
 
 - (id)copyWithZone:(NSZone*)zone {
@@ -702,11 +737,19 @@
 }
 
 + (Edge*)edge {
+#if __has_feature(objc_arc)
+    return [[Edge alloc] init];
+#else
 	return [[[Edge alloc] init] autorelease];
+#endif
 }
 
 + (Edge*)edgeWithSource:(Node*)s andTarget:(Node*)t {
-	return [[[Edge alloc] initWithSource:s andTarget:t] autorelease];
+#if __has_feature(objc_arc)
+    return [[Edge alloc] initWithSource:s andTarget:t];
+#else
+    return [[[Edge alloc] initWithSource:s andTarget:t] autorelease];
+#endif
 }
 
 @end
diff --git a/tikzit/src/common/EdgeStyle.m b/tikzit/src/common/EdgeStyle.m
index 39810fa..c61e94a 100644
--- a/tikzit/src/common/EdgeStyle.m
+++ b/tikzit/src/common/EdgeStyle.m
@@ -77,10 +77,12 @@
 }
 
 - (void)dealloc {
+#if ! __has_feature(objc_arc)
     [name release];
     [category release];
     [colorRGB release];
     [super dealloc];
+#endif
 }
 
 - (NSString*) description {
@@ -98,7 +100,11 @@
 }
 
 + (EdgeStyle*)defaultEdgeStyleWithName:(NSString*)nm {
+#if __has_feature(objc_arc)
+    return [[EdgeStyle alloc] initWithName:nm];
+#else
 	return [[[EdgeStyle alloc] initWithName:nm] autorelease];
+#endif
 }
 
 - (NSString*)name { return name; }
@@ -107,7 +113,9 @@
 		NSString *oldValue = name;
 		name = [s copy];
 		[self postPropertyChanged:@"name" oldValue:oldValue];
+#if ! __has_feature(objc_arc)
 		[oldValue release];
+#endif
 	}
 }
 
@@ -147,8 +155,10 @@
 		NSString *oldValue = category;
 		category = [s copy];
 		[self postPropertyChanged:@"category" oldValue:oldValue];
-		[oldValue release];
-	}
+#if ! __has_feature(objc_arc)
+        [oldValue release];
+#endif
+    }
 }
 
 - (ColorRGB*)colorRGB {
@@ -160,8 +170,10 @@
 		ColorRGB *oldValue = colorRGB;
 		colorRGB = [c copy];
 		[self postPropertyChanged:@"colorRGB" oldValue:oldValue];
-		[oldValue release];
-	}
+#if ! __has_feature(objc_arc)
+        [oldValue release];
+#endif
+    }
 }
 
 - (NSString*)tikz {
diff --git a/tikzit/src/common/Graph.m b/tikzit/src/common/Graph.m
index 2d07ccc..cf09a69 100644
--- a/tikzit/src/common/Graph.m
+++ b/tikzit/src/common/Graph.m
@@ -51,8 +51,12 @@
 }
 
 - (id)initFromTikz:(NSString*)tikz error:(NSError**)e {
-	[self release];
-	return [[TikzGraphAssembler parseTikz:tikz error:e] retain];
+#if __has_feature(objc_arc)
+    return [TikzGraphAssembler parseTikz:tikz error:e];
+#else
+    [self release];
+    return [[TikzGraphAssembler parseTikz:tikz error:e] retain];
+#endif
 }
 
 - (id)initFromTikz:(NSString*)tikz {
@@ -69,7 +73,8 @@
 	[[NSNotificationCenter defaultCenter] removeObserver:self];
 
 	[graphLock lock];
-	[inEdges release];
+#if ! __has_feature(objc_arc)
+    [inEdges release];
 	[outEdges release];
 	[edges release];
 	[nodes release];
@@ -78,18 +83,23 @@
 	[graphLock release];
 	
 	[super dealloc];
+#endif
 }
 
 - (void)sync {
 	[graphLock lock];
 	if (dirty) {
-		[inEdges release];
-		[outEdges release];
+#if ! __has_feature(objc_arc)
+        [inEdges release];
+        [outEdges release];
+#endif
 		inEdges = [[NSMapTable alloc] initWithKeyOptions:NSMapTableStrongMemory valueOptions:NSMapTableStrongMemory capacity:10];
 		outEdges = [[NSMapTable alloc] initWithKeyOptions:NSMapTableStrongMemory valueOptions:NSMapTableStrongMemory capacity:10];
 		
+#if ! __has_feature(objc_arc)
 		NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
-		
+#endif
+        
 		for (Edge *e in edges) {
 			NSMutableSet *ie = [inEdges objectForKey:[e target]];
 			NSMutableSet *oe = [outEdges objectForKey:[e source]];
@@ -108,8 +118,9 @@
 			[oe addObject:e];
 		}
 		
+#if ! __has_feature(objc_arc)
 		[pool drain];
-		
+#endif
 		
 		dirty = NO;
 	}
@@ -150,12 +161,20 @@
 
 - (NSSet*)inEdgesForNode:(Node*)nd {
 	[self sync];
-	return [[[inEdges objectForKey:nd] retain] autorelease];
+#if __has_feature(objc_arc)
+    return [inEdges objectForKey:nd];
+#else
+    return [[[inEdges objectForKey:nd] retain] autorelease];
+#endif
 }
 
 - (NSSet*)outEdgesForNode:(Node*)nd {
 	[self sync];
-	return [[[outEdges objectForKey:nd] retain] autorelease];
+#if __has_feature(objc_arc)
+    return [outEdges objectForKey:nd];
+#else
+    return [[[outEdges objectForKey:nd] retain] autorelease];
+#endif
 }
 
 - (NSSet*)incidentEdgesForNodes:(NSSet*)nds {
@@ -347,7 +366,10 @@
     }
 	GraphChange *change = [GraphChange nodeOrderChangeFrom:oldOrder to:nodes moved:nodeSet];
     [graphLock unlock];
-	[oldOrder release];
+
+#if ! __has_feature(objc_arc)
+    [oldOrder release];
+#endif
     
     return change;
 }
@@ -365,8 +387,11 @@
         }
     }
 	GraphChange *change = [GraphChange nodeOrderChangeFrom:oldOrder to:nodes moved:nodeSet];
-	[oldOrder release];
-    
+
+#if ! __has_feature(objc_arc)
+    [oldOrder release];
+#endif
+
     return change;
 }
 
@@ -383,7 +408,10 @@
     }
 	GraphChange *change = [GraphChange edgeOrderChangeFrom:oldOrder to:edges moved:edgeSet];
     [graphLock unlock];
-	[oldOrder release];
+
+#if ! __has_feature(objc_arc)
+    [oldOrder release];
+#endif
     
     return change;
 }
@@ -401,8 +429,11 @@
         }
     }
 	GraphChange *change = [GraphChange edgeOrderChangeFrom:oldOrder to:edges moved:edgeSet];
-	[oldOrder release];
-    
+
+#if ! __has_feature(objc_arc)
+    [oldOrder release];
+#endif
+
     return change;
 }
 
@@ -419,7 +450,10 @@
     }
 	GraphChange *change = [GraphChange nodeOrderChangeFrom:oldOrder to:nodes moved:nodeSet];
     [graphLock unlock];
-	[oldOrder release];
+    
+#if ! __has_feature(objc_arc)
+    [oldOrder release];
+#endif
     
     return change;
 }
@@ -437,7 +471,10 @@
     }
 	GraphChange *change = [GraphChange edgeOrderChangeFrom:oldOrder to:edges moved:edgeSet];
     [graphLock unlock];
-	[oldOrder release];
+    
+#if ! __has_feature(objc_arc)
+    [oldOrder release];
+#endif
     
     return change;
 }
@@ -455,8 +492,11 @@
         }
     }
 	GraphChange *change = [GraphChange nodeOrderChangeFrom:oldOrder to:nodes moved:nodeSet];
-	[oldOrder release];
-    
+
+#if ! __has_feature(objc_arc)
+    [oldOrder release];
+#endif
+
     return change;
 }
 
@@ -473,8 +513,11 @@
         }
     }
 	GraphChange *change = [GraphChange edgeOrderChangeFrom:oldOrder to:edges moved:edgeSet];
-	[oldOrder release];
-    
+
+#if ! __has_feature(objc_arc)
+    [oldOrder release];
+#endif
+
     return change;
 }
 
@@ -571,7 +614,9 @@
 			[e1 setSource:[newNds objectForKey:[e source]]];
 			[e1 setTarget:[newNds objectForKey:[e target]]];
 			[newGraph addEdge:e1];
-			[e1 release]; // e1 belongs to newGraph
+#if ! __has_feature(objc_arc)
+            [e1 release]; // e1 belongs to newGraph
+#endif
 		}
 	}
 
@@ -584,8 +629,9 @@
 	[self sync];
 	
 	NSMutableSet *cover = [NSMutableSet set];
+#if ! __has_feature(objc_arc)
 	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
-	
+#endif
 	NSMutableSet *remainingEdges = [NSMutableSet setWithArray:edges];
 	
 	while ([remainingEdges count] != 0) {
@@ -610,10 +656,14 @@
 		}
 		
 		[cover addObject:path];
+#if ! __has_feature(objc_arc)
 		[path release];
+#endif
 	}
-	
+
+#if ! __has_feature(objc_arc)
 	[pool drain];
+#endif
 	return cover;
 }
 
@@ -780,7 +830,11 @@
 }
 
 + (Graph*)graph {
+#if __has_feature(objc_arc)
+    return [[self alloc] init];
+#else
 	return [[[self alloc] init] autorelease];
+#endif
 }
 
 + (Graph*)graphFromTikz:(NSString*)tikz error:(NSError**)e {
@@ -803,9 +857,15 @@
 	for (Node *n in nds) {
 		Node *ncopy = [n copyWithZone:zone];
 		[tab setObject:ncopy forKey:n];
+#if ! __has_feature(objc_arc)
 		[ncopy release]; // tab should still retain ncopy.
+#endif
 	}
-	return [tab autorelease];
+#if __has_feature(objc_arc)
+    return tab;
+#else
+    return [tab autorelease];
+#endif
 }
 
 + (NSMapTable*)edgeTableForEdges:(NSSet*)es {
@@ -820,7 +880,9 @@
 	for (Edge *e in es) {
 		Edge *ecopy = [e copyWithZone:zone];
 		[tab setObject:ecopy forKey:e];
+#if ! __has_feature(objc_arc)
 		[ecopy release]; // tab should still retain ecopy.
+#endif
 	}
 	return tab;
 }
diff --git a/tikzit/src/common/GraphChange.m b/tikzit/src/common/GraphChange.m
index 239ae23..29a3939 100644
--- a/tikzit/src/common/GraphChange.m
+++ b/tikzit/src/common/GraphChange.m
@@ -36,6 +36,7 @@
 }
 
 - (void)dealloc {
+#if ! __has_feature(objc_arc)
 	[affectedNodes release];
 	[affectedEdges release];
 	[nodeRef release];
@@ -56,6 +57,7 @@
 	[nwEdgeOrder release];
 	
 	[super dealloc];
+#endif
 }
 
 @synthesize changeType;
@@ -77,65 +79,128 @@
 	switch ([self changeType]) {
 		case GraphAddition:
 			[inverse setChangeType:GraphDeletion];
-			inverse->affectedNodes = [affectedNodes retain];
-			inverse->affectedEdges = [affectedEdges retain];
+#if __has_feature(objc_arc)
+            inverse->affectedNodes = affectedNodes;
+            inverse->affectedEdges = affectedEdges;
+#else
+            inverse->affectedNodes = [affectedNodes retain];
+            inverse->affectedEdges = [affectedEdges retain];
+#endif
 			break;
 		case GraphDeletion:
 			[inverse setChangeType:GraphAddition];
-			inverse->affectedNodes = [affectedNodes retain];
-			inverse->affectedEdges = [affectedEdges retain];
+#if __has_feature(objc_arc)
+            inverse->affectedNodes = affectedNodes;
+            inverse->affectedEdges = affectedEdges;
+#else
+            inverse->affectedNodes = [affectedNodes retain];
+            inverse->affectedEdges = [affectedEdges retain];
+#endif
 			break;
 		case NodePropertyChange:
-			inverse->nodeRef = [nodeRef retain];
-			inverse->oldNode = [nwNode retain];
-			inverse->nwNode = [oldNode retain];
+#if __has_feature(objc_arc)
+            inverse->nodeRef = nodeRef;
+            inverse->oldNode = nwNode;
+            inverse->nwNode = oldNode;
+#else
+            inverse->nodeRef = [nodeRef retain];
+            inverse->oldNode = [nwNode retain];
+            inverse->nwNode = [oldNode retain];
+#endif
 			break;
 		case NodesPropertyChange:
-			inverse->oldNodeTable = [nwNodeTable retain];
-			inverse->nwNodeTable = [oldNodeTable retain];
+#if __has_feature(objc_arc)
+            
+#else
+            inverse->oldNodeTable = [nwNodeTable retain];
+            inverse->nwNodeTable = [oldNodeTable retain];
+#endif
 			break;
 		case EdgePropertyChange:
-			inverse->edgeRef = [edgeRef retain];
-			inverse->oldEdge = [nwEdge retain];
-			inverse->nwEdge = [oldEdge retain];
+#if __has_feature(objc_arc)
+            inverse->edgeRef = edgeRef;
+            inverse->oldEdge = nwEdge;
+            inverse->nwEdge = oldEdge;
+#else
+            inverse->edgeRef = [edgeRef retain];
+            inverse->oldEdge = [nwEdge retain];
+            inverse->nwEdge = [oldEdge retain];
+#endif
 			break;
 		case EdgesPropertyChange:
-			inverse->oldEdgeTable = [nwEdgeTable retain];
-			inverse->nwEdgeTable = [oldEdgeTable retain];
+#if __has_feature(objc_arc)
+            inverse->oldEdgeTable = nwEdgeTable;
+            inverse->nwEdgeTable = oldEdgeTable;
+#else
+            inverse->oldEdgeTable = [nwEdgeTable retain];
+            inverse->nwEdgeTable = [oldEdgeTable retain];
+#endif
 			break;
 		case NodesShift:
-			inverse->affectedNodes = [affectedNodes retain];
-			[inverse setShiftPoint:NSMakePoint(-[self shiftPoint].x,
-											   -[self shiftPoint].y)];
+#if __has_feature(objc_arc)
+            inverse->affectedNodes = affectedNodes;
+#else
+            inverse->affectedNodes = [affectedNodes retain];
+#endif
+            [inverse setShiftPoint:NSMakePoint(-[self shiftPoint].x,
+                                               -[self shiftPoint].y)];
 			break;
 		case NodesFlip:
-			inverse->affectedNodes = [affectedNodes retain];
-			[inverse setHorizontal:[self horizontal]];
+#if __has_feature(objc_arc)
+            inverse->affectedNodes = affectedNodes;
+#else
+            inverse->affectedNodes = [affectedNodes retain];
+#endif
+            [inverse setHorizontal:[self horizontal]];
 			break;
 		case EdgesReverse:
-			inverse->affectedEdges = [affectedEdges retain];
+#if __has_feature(objc_arc)
+            inverse->affectedEdges = affectedEdges;
+#else
+            inverse->affectedEdges = [affectedEdges retain];
+#endif
 			break;
 		case BoundingBoxChange:
 			inverse->oldBoundingBox = nwBoundingBox;
 			inverse->nwBoundingBox = oldBoundingBox;
 			break;
 		case GraphPropertyChange:
-			inverse->oldGraphData = [nwGraphData retain];
-			inverse->nwGraphData = [oldGraphData retain];
+#if __has_feature(objc_arc)
+            inverse->oldGraphData = nwGraphData;
+            inverse->nwGraphData = oldGraphData;
+#else
+            inverse->oldGraphData = [nwGraphData retain];
+            inverse->nwGraphData = [oldGraphData retain];
+#endif
 			break;
 		case NodeOrderChange:
-			inverse->affectedNodes = [affectedNodes retain];
-			inverse->oldNodeOrder = [nwNodeOrder retain];
-			inverse->nwNodeOrder = [oldNodeOrder retain];
+#if __has_feature(objc_arc)
+            inverse->affectedNodes = affectedNodes;
+            inverse->oldNodeOrder = nwNodeOrder;
+            inverse->nwNodeOrder = oldNodeOrder;
+#else
+            inverse->affectedNodes = [affectedNodes retain];
+            inverse->oldNodeOrder = [nwNodeOrder retain];
+            inverse->nwNodeOrder = [oldNodeOrder retain];
+#endif
 			break;
 		case EdgeOrderChange:
-			inverse->affectedEdges = [affectedEdges retain];
-			inverse->oldEdgeOrder = [nwEdgeOrder retain];
-			inverse->nwEdgeOrder = [oldEdgeOrder retain];
+#if __has_feature(objc_arc)
+            inverse->affectedEdges = affectedEdges;
+            inverse->oldEdgeOrder = nwEdgeOrder;
+            inverse->nwEdgeOrder = oldEdgeOrder;
+#else
+            inverse->affectedEdges = [affectedEdges retain];
+            inverse->oldEdgeOrder = [nwEdgeOrder retain];
+            inverse->nwEdgeOrder = [oldEdgeOrder retain];
+#endif
 			break;
 	}
-
+#if __has_feature(objc_arc)
+    return inverse;
+#else
 	return [inverse autorelease];
+#endif
 }
 
 + (GraphChange*)graphAdditionWithNodes:(NSSet *)ns edges:(NSSet *)es {
@@ -143,7 +208,11 @@
 	[gc setChangeType:GraphAddition];
 	[gc setAffectedNodes:ns];
 	[gc setAffectedEdges:es];
-	return [gc autorelease];
+#if __has_feature(objc_arc)
+    return gc;
+#else
+    return [gc autorelease];
+#endif
 }
 
 + (GraphChange*)graphDeletionWithNodes:(NSSet *)ns edges:(NSSet *)es {
@@ -151,7 +220,11 @@
 	[gc setChangeType:GraphDeletion];
 	[gc setAffectedNodes:ns];
 	[gc setAffectedEdges:es];
-	return [gc autorelease];
+#if __has_feature(objc_arc)
+    return gc;
+#else
+    return [gc autorelease];
+#endif
 }
 
 + (GraphChange*)propertyChangeOfNode:(Node*)nd fromOld:(Node*)old toNew:(Node*)nw {
@@ -160,7 +233,11 @@
 	[gc setNodeRef:nd];
 	[gc setOldNode:old];
 	[gc setNwNode:nw];
-	return [gc autorelease];
+#if __has_feature(objc_arc)
+    return gc;
+#else
+    return [gc autorelease];
+#endif
 }
 
 + (GraphChange*)propertyChangeOfNodesFromOldCopies:(NSMapTable*)oldC
@@ -169,7 +246,11 @@
 	[gc setChangeType:NodesPropertyChange];
 	[gc setOldNodeTable:oldC];
 	[gc setNwNodeTable:newC];
-	return [gc autorelease];
+#if __has_feature(objc_arc)
+    return gc;
+#else
+    return [gc autorelease];
+#endif
 }
 
 + (GraphChange*)propertyChangeOfEdge:(Edge*)e fromOld:(Edge *)old toNew:(Edge *)nw {
@@ -178,7 +259,11 @@
 	[gc setEdgeRef:e];
 	[gc setOldEdge:old];
 	[gc setNwEdge:nw];
-	return [gc autorelease];
+#if __has_feature(objc_arc)
+    return gc;
+#else
+    return [gc autorelease];
+#endif
 }
 
 + (GraphChange*)propertyChangeOfEdgesFromOldCopies:(NSMapTable*)oldC
@@ -187,7 +272,11 @@
 	[gc setChangeType:EdgesPropertyChange];
 	[gc setOldEdgeTable:oldC];
 	[gc setNwEdgeTable:newC];
-	return [gc autorelease];
+#if __has_feature(objc_arc)
+    return gc;
+#else
+    return [gc autorelease];
+#endif
 }
 
 + (GraphChange*)shiftNodes:(NSSet*)ns byPoint:(NSPoint)p {
@@ -195,7 +284,11 @@
 	[gc setChangeType:NodesShift];
 	[gc setAffectedNodes:ns];
 	[gc setShiftPoint:p];
-	return [gc autorelease];
+#if __has_feature(objc_arc)
+    return gc;
+#else
+    return [gc autorelease];
+#endif
 }
 
 + (GraphChange*)flipNodes:(NSSet*)ns horizontal:(BOOL)b {
@@ -203,14 +296,22 @@
 	[gc setChangeType:NodesFlip];
 	[gc setAffectedNodes:ns];
 	[gc setHorizontal:b];
-	return [gc autorelease];
+#if __has_feature(objc_arc)
+    return gc;
+#else
+    return [gc autorelease];
+#endif
 }
 
 + (GraphChange*)reverseEdges:(NSSet*)es {
 	GraphChange *gc = [[GraphChange alloc] init];
 	[gc setChangeType:EdgesReverse];
 	[gc setAffectedEdges:es];
-	return [gc autorelease];
+#if __has_feature(objc_arc)
+    return gc;
+#else
+    return [gc autorelease];
+#endif
 }
 
 + (GraphChange*)changeBoundingBoxFrom:(NSRect)oldBB to:(NSRect)newBB {
@@ -218,7 +319,11 @@
 	[gc setChangeType:BoundingBoxChange];
 	[gc setOldBoundingBox:oldBB];
 	[gc setNwBoundingBox:newBB];
-	return [gc autorelease];
+#if __has_feature(objc_arc)
+    return gc;
+#else
+    return [gc autorelease];
+#endif
 }
 
 + (GraphChange*)propertyChangeOfGraphFrom:(GraphElementData*)oldData to:(GraphElementData*)newData {
@@ -226,7 +331,11 @@
 	[gc setChangeType:GraphPropertyChange];
 	[gc setOldGraphData:oldData];
 	[gc setNwGraphData:newData];
-	return [gc autorelease];
+#if __has_feature(objc_arc)
+    return gc;
+#else
+    return [gc autorelease];
+#endif
 }
 
 + (GraphChange*)nodeOrderChangeFrom:(NSArray*)old to:(NSArray*)new moved:(NSSet*)affected {
@@ -235,7 +344,11 @@
 	[gc setAffectedNodes:affected];
 	[gc setOldNodeOrder:old];
 	[gc setNwNodeOrder:new];
-	return [gc autorelease];
+#if __has_feature(objc_arc)
+    return gc;
+#else
+    return [gc autorelease];
+#endif
 }
 
 + (GraphChange*)edgeOrderChangeFrom:(NSArray*)old to:(NSArray*)new moved:(NSSet*)affected {
@@ -244,7 +357,11 @@
 	[gc setAffectedEdges:affected];
 	[gc setOldEdgeOrder:old];
 	[gc setNwEdgeOrder:new];
-	return [gc autorelease];
+#if __has_feature(objc_arc)
+    return gc;
+#else
+    return [gc autorelease];
+#endif
 }
 
 @end
diff --git a/tikzit/src/common/GraphElementData.m b/tikzit/src/common/GraphElementData.m
index 0750296..41dc9aa 100644
--- a/tikzit/src/common/GraphElementData.m
+++ b/tikzit/src/common/GraphElementData.m
@@ -28,7 +28,11 @@
 @implementation GraphElementData
 
 + (id)data {
+#if __has_feature(objc_arc)
+    return [[self alloc] init];
+#else
 	return [[[self alloc] init] autorelease];
+#endif
 }
 
 - (id)init {
@@ -48,9 +52,15 @@
 - (NSArray*)objectsAtIndexes:(NSIndexSet*)indexes {
 	return [properties objectsAtIndexes:indexes];
 }
+
+#if __has_feature(objc_arc)
+- (void) getObjects:(__unsafe_unretained id*)buffer range:(NSRange)range {
+#else
 - (void) getObjects:(id*)buffer range:(NSRange)range {
+#endif
 	[properties getObjects:buffer range:range];
 }
+
 - (void)insertObject:(id)anObject atIndex:(NSUInteger)index {
 	[properties insertObject:anObject atIndex:index];
 }
@@ -66,22 +76,33 @@
 - (void)replaceObjectAtIndex:(NSUInteger)index withObject:(id)anObject {
 	[properties replaceObjectAtIndex:index withObject:anObject];
 }
+    
+#if __has_feature(objc_arc)
+- (NSUInteger) countByEnumeratingWithState:(NSFastEnumerationState *)state
+                                   objects:(__unsafe_unretained id [])stackbuf
+                                     count:(NSUInteger)len {
+#else
 - (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state
 								  objects:(id *)stackbuf
 									count:(NSUInteger)len {
-	return [properties countByEnumeratingWithState:state objects:stackbuf count:len];
+#endif
+    return [properties countByEnumeratingWithState:state objects:stackbuf count:len];
 }
 
 - (void)setProperty:(NSString*)val forKey:(NSString*)key {
 	GraphElementProperty *m = [[GraphElementProperty alloc] initWithKeyMatching:key];
 	NSInteger idx = [properties indexOfObject:m];
-	[m release];
+#if !__has_feature(objc_arc)
+    [m release];
+#endif
 	
 	GraphElementProperty *p;
 	if (idx == NSNotFound) {
 		p = [[GraphElementProperty alloc] initWithPropertyValue:val forKey:key];
 		[properties addObject:p];
-		[p release];
+#if !__has_feature(objc_arc)
+        [p release];
+#endif
 	} else {
 		p = [properties objectAtIndex:idx];
 		[p setValue:val];
@@ -91,13 +112,19 @@
 - (void)unsetProperty:(NSString*)key {
 	GraphElementProperty *m = [[GraphElementProperty alloc] initWithKeyMatching:key];
 	[properties removeObject:m];
-	[m release];
+#if !__has_feature(objc_arc)
+    [m release];
+#endif
+
 }
 
 - (NSString*)propertyForKey:(NSString*)key {
 	GraphElementProperty *m = [[GraphElementProperty alloc] initWithKeyMatching:key];
 	NSInteger idx = [properties indexOfObject:m];
-	[m release];
+#if !__has_feature(objc_arc)
+    [m release];
+#endif
+
 	
 	if (idx == NSNotFound) {
 		return nil;
@@ -110,19 +137,25 @@
 - (void)setAtom:(NSString*)atom {
 	GraphElementProperty *a = [[GraphElementProperty alloc] initWithAtomName:atom];
 	if (![properties containsObject:a]) [properties addObject:a];
-	[a release];
+#if !__has_feature(objc_arc)
+    [a release];
+#endif
 }
 
 - (void)unsetAtom:(NSString*)atom {
 	GraphElementProperty *a = [[GraphElementProperty alloc] initWithAtomName:atom];
 	[properties removeObject:a];
-	[a release];
+#if !__has_feature(objc_arc)
+    [a release];
+#endif
 }
 
 - (BOOL)isAtomSet:(NSString*)atom {
 	GraphElementProperty *a = [[GraphElementProperty alloc] initWithAtomName:atom];
 	BOOL set = [properties containsObject:a];
-	[a release];
+#if !__has_feature(objc_arc)
+    [a release];
+#endif
 	return set;
 }
 
@@ -136,14 +169,18 @@
 	for (GraphElementProperty *p in properties) {
 		GraphElementProperty *p2 = [p copy];
 		[cp addObject:p2];
-		[p2 release];
+#if !__has_feature(objc_arc)
+        [p2 release];
+#endif
 	}
 	return cp;
 }
 
 - (void)dealloc {
-	[properties release];
-	[super dealloc];
+#if !__has_feature(objc_arc)
+    [properties release];
+    [super dealloc];
+#endif
 }
 
 @end
diff --git a/tikzit/src/common/GraphElementProperty.m b/tikzit/src/common/GraphElementProperty.m
index 3cf6632..25e1b15 100644
--- a/tikzit/src/common/GraphElementProperty.m
+++ b/tikzit/src/common/GraphElementProperty.m
@@ -28,13 +28,25 @@
 @implementation GraphElementProperty
 
 + (id)atom:(NSString*)n {
-	return [[[self alloc] initWithAtomName:n] autorelease];
+#if __has_feature(objc_arc)
+    return [[self alloc] initWithAtomName:n];
+#else
+    return [[[self alloc] initWithAtomName:n] autorelease];
+#endif
 }
 + (id)property:(NSString*)k withValue:(NSString*)v {
+#if __has_feature(objc_arc)
+    return [[self alloc] initWithPropertyValue:v forKey:k];
+#else
 	return [[[self alloc] initWithPropertyValue:v forKey:k] autorelease];
+#endif
 }
 + (id)keyMatching:(NSString*)k {
+#if __has_feature(objc_arc)
+    return [[self alloc] initWithKeyMatching:k];
+#else
 	return [[[self alloc] initWithKeyMatching:k] autorelease];
+#endif
 }
 
 - (id)initWithAtomName:(NSString*)n {
@@ -65,14 +77,18 @@
 }
 
 - (void) dealloc {
+#if ! __has_feature(objc_arc)
 	[key release];
 	[value release];
 	[super dealloc];
+#endif
 }
 
 - (void)setValue:(NSString *)v {
 	if (value != v) {
+#if ! __has_feature(objc_arc)
 		[value release];
+#endif
 		value = [v copy];
 	}
 }
@@ -88,7 +104,9 @@
 
 - (void)setKey:(NSString *)k {
 	if (key != k) {
+#if ! __has_feature(objc_arc)
 		[key release];
+#endif
 		key = [k copy];
 	}
     if (key == nil)
diff --git a/tikzit/src/common/NSString+LatexConstants.m b/tikzit/src/common/NSString+LatexConstants.m
index bd598b7..634c189 100644
--- a/tikzit/src/common/NSString+LatexConstants.m
+++ b/tikzit/src/common/NSString+LatexConstants.m
@@ -197,10 +197,14 @@ static NSSet *texModifiers = nil;
 	}
 	
 	NSString *ret = [buf copy];
+#if __has_feature(objc_arc)
+    return ret;
+#else
 	[buf release];
 	[wordBuf release];
 
 	return [ret autorelease];
+#endif
 }
 
 @end
diff --git a/tikzit/src/common/NSString+Tikz.m b/tikzit/src/common/NSString+Tikz.m
index 520ffd3..1e3073b 100644
--- a/tikzit/src/common/NSString+Tikz.m
+++ b/tikzit/src/common/NSString+Tikz.m
@@ -23,12 +23,21 @@
 - (NSString*) tikzEscapedString {
 	static NSCharacterSet *avoid = nil;
 	if (avoid == nil)
-		avoid = [[[NSCharacterSet characterSetWithCharactersInString:@"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ<>-'0123456789. "] invertedSet] retain];
+#if __has_feature(objc_arc)
+        avoid = [[NSCharacterSet characterSetWithCharactersInString:@"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ<>-'0123456789. "] invertedSet];
+#else
+    avoid = [[[NSCharacterSet characterSetWithCharactersInString:@"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ<>-'0123456789. "] invertedSet] retain];
+#endif
+
 
 	if ([self rangeOfCharacterFromSet:avoid].length > 0) {
 		return [NSString stringWithFormat:@"{%@}", self];
 	} else {
+#if __has_feature(objc_arc)
+        return self;
+#else
 		return [[self retain] autorelease];
+#endif
 	}
 }
 
diff --git a/tikzit/src/common/Node.m b/tikzit/src/common/Node.m
index 8c64b6b..c5b11d1 100644
--- a/tikzit/src/common/Node.m
+++ b/tikzit/src/common/Node.m
@@ -50,11 +50,13 @@
 }
 
 - (void)dealloc {
+#if ! __has_feature(objc_arc)
 	[name release];
 	[style release];
 	[data release];
 	[label release];
 	[super dealloc];
+#endif
 }
 
 - (Shape*) shape {
@@ -67,7 +69,11 @@
 
 - (Transformer*) shapeTransformerFromTransformer:(Transformer*)t {
 	// we take a copy to keep the reflection attributes
+#if ! __has_feature(objc_arc)
     Transformer *transformer = [[t copy] autorelease];
+#else
+    Transformer *transformer = [t copy];
+#endif
     NSPoint screenPos = [t toScreen:point];
     [transformer setOrigin:screenPos];
     float scale = [t scale];
@@ -101,7 +107,11 @@
 }
 
 - (BOOL)attachStyleFromTable:(NSArray*)styles {
-	NSString *style_name = [[[data propertyForKey:@"style"] retain] autorelease];
+#if __has_feature(objc_arc)
+    NSString *style_name = [data propertyForKey:@"style"];
+#else
+    NSString *style_name = [[[data propertyForKey:@"style"] retain] autorelease];
+#endif
 	
 	[self setStyle:nil];
 	
@@ -137,11 +147,19 @@
 }
 
 + (Node*)nodeWithPoint:(NSPoint)p {
-	return [[[Node alloc] initWithPoint:p] autorelease];
+#if __has_feature(objc_arc)
+    return [[Node alloc] initWithPoint:p];
+#else
+    return [[[Node alloc] initWithPoint:p] autorelease];
+#endif
 }
 
 + (Node*)node {
-	return [[[Node alloc] init] autorelease];
+#if __has_feature(objc_arc)
+    return [[Node alloc] init];
+#else
+    return [[[Node alloc] init] autorelease];
+#endif
 }
 
 
@@ -180,9 +198,13 @@
 
 - (void)setStyle:(NodeStyle *)st {
 	if (style != st) {
-		NodeStyle *oldStyle = style;
-		style = [st retain];
-		[oldStyle release];
+#if __has_feature(objc_arc)
+        style = st;
+#else
+        NodeStyle *oldStyle = style;
+        style = [st retain];
+        [oldStyle release];
+#endif
 	}
 	[self updateData];
 }
diff --git a/tikzit/src/common/NodeStyle.m b/tikzit/src/common/NodeStyle.m
index 26ab793..193d44d 100644
--- a/tikzit/src/common/NodeStyle.m
+++ b/tikzit/src/common/NodeStyle.m
@@ -87,12 +87,14 @@
 }
 
 - (void)dealloc {
+#if ! __has_feature(objc_arc)
 	[name release];
 	[category release];
 	[shapeName release];
 	[strokeColorRGB release];
 	[fillColorRGB release];
 	[super dealloc];
+#endif
 }
 
 - (NSString*) description {
@@ -110,7 +112,11 @@
 }
 
 + (NodeStyle*)defaultNodeStyleWithName:(NSString*)nm {
-	return [[[NodeStyle alloc] initWithName:nm] autorelease];
+#if __has_feature(objc_arc)
+    return [[NodeStyle alloc] initWithName:nm];
+#else
+    return [[[NodeStyle alloc] initWithName:nm] autorelease];
+#endif
 }
 
 - (NSString*)name {
@@ -122,7 +128,9 @@
 		NSString *oldValue = name;
 		name = [s copy];
 		[self postPropertyChanged:@"name" oldValue:oldValue];
+#if ! __has_feature(objc_arc)
 		[oldValue release];
+#endif
 	}
 }
 
@@ -135,7 +143,9 @@
 		NSString *oldValue = shapeName;
 		shapeName = [s copy];
 		[self postPropertyChanged:@"shapeName" oldValue:oldValue];
+#if ! __has_feature(objc_arc)
 		[oldValue release];
+#endif
 	}
 }
 
@@ -148,8 +158,10 @@
 		NSString *oldValue = category;
 		category = [s copy];
 		[self postPropertyChanged:@"category" oldValue:oldValue];
+#if ! __has_feature(objc_arc)
 		[oldValue release];
-	}
+#endif
+    }
 }
 
 - (int)strokeThickness { return strokeThickness; }
@@ -175,8 +187,10 @@
 		ColorRGB *oldValue = strokeColorRGB;
 		strokeColorRGB = [c copy];
 		[self postPropertyChanged:@"strokeColorRGB" oldValue:oldValue];
+#if ! __has_feature(objc_arc)
 		[oldValue release];
-	}
+#endif
+    }
 }
 
 - (ColorRGB*)fillColorRGB {
@@ -188,8 +202,10 @@
 		ColorRGB *oldValue = fillColorRGB;
 		fillColorRGB = [c copy];
 		[self postPropertyChanged:@"fillColorRGB" oldValue:oldValue];
+#if ! __has_feature(objc_arc)
 		[oldValue release];
-	}
+#endif
+    }
 }
 
 - (NSString*)tikz {
diff --git a/tikzit/src/common/PickSupport.m b/tikzit/src/common/PickSupport.m
index 6470214..560fc2c 100644
--- a/tikzit/src/common/PickSupport.m
+++ b/tikzit/src/common/PickSupport.m
@@ -42,15 +42,24 @@
 	self = [super init];
 
 	if (self) {
-		selectedNodes = [[NSMutableSet set] retain];
-		selectedEdges = [[NSMutableSet set] retain];
+#if __has_feature(objc_arc)
+        selectedNodes = [NSMutableSet set];
+        selectedEdges = [NSMutableSet set];
+#else
+        selectedNodes = [[NSMutableSet set] retain];
+        selectedEdges = [[NSMutableSet set] retain];
+#endif
 	}
 
 	return self;
 }
 
 + (PickSupport*)pickSupport {
-	return [[[PickSupport alloc] init] autorelease];
+#if __has_feature(objc_arc)
+    return [[PickSupport alloc] init];
+#else
+    return [[[PickSupport alloc] init] autorelease];
+#endif
 }
 
 @synthesize selectedNodes;
@@ -176,7 +185,9 @@
 	}
 
 	if (replace) {
+#if ! __has_feature(objc_arc)
 		[selectedNodes release];
+#endif
 		selectedNodes = [nodes mutableCopy];
 	} else {
 		[selectedNodes unionSet:nodes];
@@ -208,10 +219,12 @@
 }
 
 - (void)dealloc {
+#if ! __has_feature(objc_arc)
 	[selectedNodes release];
 	[selectedEdges release];
 	
 	[super dealloc];
+#endif
 }
 
 @end
diff --git a/tikzit/src/common/Preambles.m b/tikzit/src/common/Preambles.m
index 651bbcd..922fc30 100644
--- a/tikzit/src/common/Preambles.m
+++ b/tikzit/src/common/Preambles.m
@@ -55,7 +55,11 @@ static NSString *POSTAMBLE =
 @implementation Preambles
 
 + (Preambles*)preambles {
+#if __has_feature(objc_arc)
+    return [[self alloc] init];
+#else
 	return [[[self alloc] init] autorelease];
+#endif
 }
 
 - (id)init {
@@ -72,10 +76,12 @@ static NSString *POSTAMBLE =
 }
 
 - (void)dealloc {
+#if ! __has_feature(objc_arc)
 	[selectedPreambleName release];
 	[styles release];
 	[styleManager release];
 	[super dealloc];
+#endif
 }
 
 - (NSString*)preambleForName:(NSString*)name {
@@ -101,14 +107,18 @@ static NSString *POSTAMBLE =
 }
 
 - (void)setStyles:(NSArray*)sty {
+#if ! __has_feature(objc_arc)
 	[sty retain];
 	[styles release];
+#endif
 	styles = sty;
 }
 
 - (void)setEdges:(NSArray*)edg {
+#if ! __has_feature(objc_arc)
 	[edg retain];
 	[edges release];
+#endif
 	edges = edg;
 }
 
@@ -116,7 +126,9 @@ static NSString *POSTAMBLE =
 	if (styleManager != nil) {
 		[self setStyles:[styleManager nodeStyles]];
 	}
+#if ! __has_feature(objc_arc)
 	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+#endif
 	NSMutableString *buf = [NSMutableString string];
 	NSMutableString *colbuf = [NSMutableString string];
 	NSMutableSet *colors = [NSMutableSet setWithCapacity:2*[styles count]];
@@ -154,8 +166,12 @@ static NSString *POSTAMBLE =
 	
 	NSString *defs = [[NSString alloc] initWithFormat:@"%@\n%@", colbuf, buf];
 	
+#if __has_feature(objc_arc)
+    return defs;
+#else
 	[pool drain];
 	return [defs autorelease];
+#endif
 }
 
 - (NSString*)defaultPreamble {
@@ -170,7 +186,9 @@ static NSString *POSTAMBLE =
 - (NSString*)selectedPreambleName { return selectedPreambleName; }
 - (void)setSelectedPreambleName:(NSString *)sel {
 	if (sel != selectedPreambleName) {
+#if ! __has_feature(objc_arc)
 		[selectedPreambleName release];
+#endif
 		selectedPreambleName = [sel copy];
 	}
 }
@@ -190,8 +208,10 @@ static NSString *POSTAMBLE =
 }
 
 - (void)setStyleManager:(StyleManager *)manager {
+#if ! __has_feature(objc_arc)
 	[manager retain];
 	[styleManager release];
+#endif
 	styleManager = manager;
 }
 
@@ -240,10 +260,14 @@ static NSString *POSTAMBLE =
 		isSelected = YES;
 	}
 	NSString *preamble = [preambleDict objectForKey:old];
+#if ! __has_feature(objc_arc)
 	[preamble retain];
+#endif
 	[preambleDict removeObjectForKey:old];
 	[preambleDict setObject:preamble forKey:new];
+#if ! __has_feature(objc_arc)
 	[preamble release];
+#endif
 	if (isSelected) {
 		[self setSelectedPreambleName:new];
 	}
@@ -254,11 +278,15 @@ static NSString *POSTAMBLE =
 	if ([name isEqualToString:@"default"])
 		return NO;
 	// "name" may be held only by being the selected preamble...
+#if ! __has_feature(objc_arc)
 	[name retain];
+#endif
 	if ([name isEqualToString:selectedPreambleName])
 		[self setSelectedPreambleName:nil];
 	[preambleDict removeObjectForKey:name];
+#if ! __has_feature(objc_arc)
 	[name release];
+#endif
 	return YES;
 }
 
diff --git a/tikzit/src/common/PropertyHolder.m b/tikzit/src/common/PropertyHolder.m
index 2b3442f..6aaf125 100644
--- a/tikzit/src/common/PropertyHolder.m
+++ b/tikzit/src/common/PropertyHolder.m
@@ -63,8 +63,10 @@
 }
 
 - (void)dealloc {
+#if ! __has_feature(objc_arc)
     [notificationName release];
     [super dealloc];
+#endif
 }
 
 @end
diff --git a/tikzit/src/common/Shape.m b/tikzit/src/common/Shape.m
index eb466e2..e887688 100644
--- a/tikzit/src/common/Shape.m
+++ b/tikzit/src/common/Shape.m
@@ -61,8 +61,12 @@
 - (NSSet*)paths {return paths;}
 - (void)setPaths:(NSSet *)p {
 	if (paths != p) {
+#if __has_feature(objc_arc)
+        paths = p;
+#else
 		[paths release];
 		paths = [p retain];
+#endif
 		[self calcBoundingRect];
 	}
 }
@@ -79,16 +83,19 @@
 }
 
 - (void)dealloc {
+#if ! __has_feature(objc_arc)
 	[paths release];
 	[styleTikz release];
 	[super dealloc];
+#endif
 }
 
 NSDictionary *shapeDictionary = nil;
 
 + (void)addShapesInDir:(NSString*)shapeDir to:(NSMutableDictionary*)shapeDict {
 	NSFileManager *fileManager = [NSFileManager defaultManager];
-	NSArray *files = [fileManager directoryContentsAtPath:shapeDir];
+    NSError *err = nil;
+	NSArray *files = [fileManager contentsOfDirectoryAtPath:shapeDir error:&err];
 
 	if (files != nil) {
 		NSString *nm;
@@ -100,7 +107,9 @@ NSDictionary *shapeDictionary = nil;
                    [shapeDir stringByAppendingPathComponent:f]];
 				if (sh != nil) {
 					[shapeDict setObject:sh forKey:nm];
+#if ! __has_feature(objc_arc)
                     [sh release];
+#endif
 				}
 			}
 		}
@@ -121,7 +130,9 @@ NSDictionary *shapeDictionary = nil;
 									  shapes[3], SHAPE_UP_TRIANGLE,
 									  shapes[4], SHAPE_DOWN_TRIANGLE,
 									  nil];
+#if ! __has_feature(objc_arc)
 	for (int i = 0; i<5; ++i) [shapes[i] release];
+#endif
     
 	NSString *systemShapeDir = [[SupportDir systemSupportDir] stringByAppendingPathComponent:@"shapes"];
 	NSString *userShapeDir = [[SupportDir userSupportDir] stringByAppendingPathComponent:@"shapes"];
@@ -136,7 +147,9 @@ NSDictionary *shapeDictionary = nil;
 		postNotificationName:@"ShapeDictionaryReplaced"
 		object:self];
 
+#if ! __has_feature(objc_arc)
 	[oldShapeDictionary release];
+#endif
 }
 
 + (NSDictionary*)shapeDictionary {
@@ -146,7 +159,11 @@ NSDictionary *shapeDictionary = nil;
 
 + (Shape*)shapeForName:(NSString*)shapeName {
 	Shape *s = [[[self shapeDictionary] objectForKey:shapeName] copy];
+#if __has_feature(objc_arc)
+    return s;
+#else
 	return [s autorelease];
+#endif
 }
 
 @end
diff --git a/tikzit/src/common/StyleManager.m b/tikzit/src/common/StyleManager.m
index ae0d488..05c6c86 100644
--- a/tikzit/src/common/StyleManager.m
+++ b/tikzit/src/common/StyleManager.m
@@ -90,7 +90,11 @@
 }
 
 + (StyleManager*) manager {
+#if __has_feature(objc_arc)
+    return [[self alloc] init];
+#else
     return [[[self alloc] init] autorelease];
+#endif
 }
 
 - (id) init {
@@ -107,15 +111,18 @@
 
 - (void) dealloc {
     [[NSNotificationCenter defaultCenter] removeObserver:self];
-
+#if ! __has_feature(objc_arc)
 	[nodeStyles release];
 	[edgeStyles release];
 
 	[super dealloc];
+#endif
 }
 
 - (void) loadDefaultEdgeStyles {
+#if ! __has_feature(objc_arc)
 	[edgeStyles release];
+#endif
 	edgeStyles = [[NSMutableArray alloc] initWithCapacity:3];
 
 	EdgeStyle *simple = [EdgeStyle defaultEdgeStyleWithName:@"simple"];
@@ -138,7 +145,9 @@
 }
 
 - (void) loadDefaultNodeStyles {
+#if ! __has_feature(objc_arc)
 	[nodeStyles release];
+#endif
     nodeStyles = [[NSMutableArray alloc] initWithCapacity:3];
 
     NodeStyle *rn = [NodeStyle defaultNodeStyleWithName:@"rn"];
@@ -212,8 +221,10 @@
 
 - (void) _setNodeStyles:(NSMutableArray*)styles {
 	[self ignoreAllNodeStyles];
+#if ! __has_feature(objc_arc)
     [nodeStyles release];
     [styles retain];
+#endif
     nodeStyles = styles;
 	for (NodeStyle *style in styles) {
 		[self listenToNodeStyle:style];
@@ -223,8 +234,10 @@
 
 - (void) _setEdgeStyles:(NSMutableArray*)styles {
 	[self ignoreAllEdgeStyles];
+#if ! __has_feature(objc_arc)
     [edgeStyles release];
     [styles retain];
+#endif
     edgeStyles = styles;
 	for (EdgeStyle *style in styles) {
 		[self listenToEdgeStyle:style];
@@ -257,10 +270,14 @@
     }
 
 	[self ignoreNodeStyle:style];
+#if ! __has_feature(objc_arc)
     [style retain];
+#endif
     [nodeStyles removeObject:style];
     [self postNodeStyleRemoved:style];
+#if ! __has_feature(objc_arc)
     [style release];
+#endif
 }
 
 - (EdgeStyle*) edgeStyleForName:(NSString*)name {
@@ -288,10 +305,14 @@
     }
 
 	[self ignoreEdgeStyle:style];
+#if ! __has_feature(objc_arc)
     [style retain];
+#endif
     [edgeStyles removeObject:style];
     [self postEdgeStyleRemoved:style];
+#if ! __has_feature(objc_arc)
     [style release];
+#endif
 }
 
 - (void) updateFromManager:(StyleManager*)m {
@@ -302,7 +323,11 @@
 			[currentStyle updateFromStyle:style];
 			[ns addObject:currentStyle];
 		} else {
+#if __has_feature(objc_arc)
+            [ns addObject:[style copy]];
+#else
 			[ns addObject:[[style copy] autorelease]];
+#endif
 		}
 	}
 	NSMutableArray *es = [NSMutableArray arrayWithCapacity:[[m edgeStyles] count]];
@@ -312,8 +337,12 @@
 			[currentStyle updateFromStyle:style];
 			[es addObject:currentStyle];
 		} else {
-			[es addObject:[[style copy] autorelease]];
-		}
+#if __has_feature(objc_arc)
+            [es addObject:[style copy]];
+#else
+            [es addObject:[[style copy] autorelease]];
+#endif		
+        }
 	}
 	[self _setNodeStyles:ns];
 	[self _setEdgeStyles:es];
@@ -324,11 +353,19 @@
 
 	NSMutableArray *ns = [NSMutableArray arrayWithCapacity:[nodeStyles count]];
 	for (NodeStyle *style in nodeStyles) {
-		[ns addObject:[[style copyWithZone:zone] autorelease]];
+#if __has_feature(objc_arc)
+        [ns addObject:[style copyWithZone:zone]];
+#else
+        [ns addObject:[[style copyWithZone:zone] autorelease]];
+#endif
 	}
 	NSMutableArray *es = [NSMutableArray arrayWithCapacity:[edgeStyles count]];
 	for (EdgeStyle *style in edgeStyles) {
-		[es addObject:[[style copyWithZone:zone] autorelease]];
+#if __has_feature(objc_arc)
+        [es addObject:[style copyWithZone:zone]];
+#else
+        [es addObject:[[style copyWithZone:zone] autorelease]];
+#endif
 	}
 	[m _setNodeStyles:ns];
 	[m _setEdgeStyles:es];
diff --git a/tikzit/src/common/TikzGraphAssembler.m b/tikzit/src/common/TikzGraphAssembler.m
index 380b71c..c5d2811 100644
--- a/tikzit/src/common/TikzGraphAssembler.m
+++ b/tikzit/src/common/TikzGraphAssembler.m
@@ -31,14 +31,20 @@
 @implementation TikzGraphAssembler
 
 - (id)init {
+#if ! __has_feature(objc_arc)
 	[self release];
+#endif
 	return nil;
 }
 
 - (id)initWithGraph:(Graph*)g {
 	self = [super init];
 	if (self) {
+#if __has_feature(objc_arc)
+        graph = g;
+#else
 		graph = [g retain];
+#endif
 		nodeMap = [[NSMutableDictionary alloc] init];
 		yylex_init (&scanner);
 		yyset_extra(self, scanner);
@@ -47,29 +53,39 @@
 }
 
 - (void)dealloc {
+#if ! __has_feature(objc_arc)
 	[graph release];
 	[nodeMap release];
 	[lastError release];
 	yylex_destroy (scanner);
 	[super dealloc];
+#endif
 }
 
 - (BOOL) parseTikz:(NSString*)t error:(NSError**)error {
+#if ! __has_feature(objc_arc)
 	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+#endif
 
 	tikzStr = [t UTF8String];
 	yy_scan_string(tikzStr, scanner);
 	int result = yyparse(scanner);
 	tikzStr = NULL;
 
+#if ! __has_feature(objc_arc)
 	[pool drain];
+#endif
 
 	if (result == 0) {
 		return YES;
 	} else {
 		if (error) {
 			if (lastError) {
+#if __has_feature(objc_arc)
+                *error = lastError;
+#else
 				*error = [[lastError retain] autorelease];
+#endif
 			} else if (result == 1) {
 				*error = [NSError errorWithMessage:@"Syntax error"
 											  code:TZ_ERR_PARSE];
@@ -91,10 +107,16 @@
 + (Graph*) parseTikz:(NSString*)tikz error:(NSError**)e {
 	Graph *gr = [[Graph alloc] init];
 	if ([self parseTikz:tikz forGraph:gr error:e]) {
+#if __has_feature(objc_arc)
+        return gr;
+#else
 		return [gr autorelease];
+#endif
 	} else {
+#if ! __has_feature(objc_arc)
 		[gr release];
-		return nil;
+#endif
+        return nil;
 	}
 }
 + (Graph*) parseTikz:(NSString*)tikz {
@@ -109,8 +131,10 @@
 
 	TikzGraphAssembler *assembler = [[self alloc] initWithGraph:gr];
 	BOOL success = [assembler parseTikz:tikz error:error];
+#if ! __has_feature(objc_arc)
 	[assembler release];
-	return success;
+#endif
+    return success;
 }
 
 + (BOOL)validateTikzPropertyNameOrValue:(NSString*)tikz {
@@ -171,8 +195,10 @@
 }
 
 - (void) setLastError:(NSError*)error {
+#if ! __has_feature(objc_arc)
 	[error retain];
 	[lastError release];
+#endif
 	lastError = error;
 }
 
diff --git a/tikzit/src/common/TikzShape.h b/tikzit/src/common/TikzShape.h
index 1ccf658..6a91f91 100644
--- a/tikzit/src/common/TikzShape.h
+++ b/tikzit/src/common/TikzShape.h
@@ -25,8 +25,11 @@
 #import "Shape.h"
 
 @interface TikzShape : Shape {
+    NSString *tikzSrc;
 }
 
+@property (copy) NSString *tikzSrc;
+
 - (id)initWithTikzFile:(NSString*)file;
 
 @end
diff --git a/tikzit/src/common/TikzShape.m b/tikzit/src/common/TikzShape.m
index 9735371..555a7df 100644
--- a/tikzit/src/common/TikzShape.m
+++ b/tikzit/src/common/TikzShape.m
@@ -26,6 +26,8 @@
 
 @implementation TikzShape
 
+@synthesize tikzSrc;
+
 - (id)initWithTikzFile:(NSString*)file {
 	self = [super init];
 	if (self) {
@@ -33,6 +35,8 @@
 												   encoding:NSUTF8StringEncoding
 													  error:NULL];
 		if (tikz == nil) return nil;
+        
+        tikzSrc = [tikz copy];
 		
 		Graph *graph = [Graph graphFromTikz:tikz];
 		if (graph == nil) return nil;
@@ -51,7 +55,11 @@
 									-NSMidY(bds));
 		[t setOrigin:shift];
 		[graph applyTransformer:t];
+#if __has_feature(objc_arc)
+        paths = [graph pathCover];
+#else
 		paths = [[graph pathCover] retain];
+#endif
 	}
 	return self;
 }
diff --git a/tikzit/src/common/Transformer.m b/tikzit/src/common/Transformer.m
index 403ae87..2b56813 100644
--- a/tikzit/src/common/Transformer.m
+++ b/tikzit/src/common/Transformer.m
@@ -28,11 +28,19 @@ float const PIXELS_PER_UNIT = 50;
 @implementation Transformer
 
 + (Transformer*)transformer {
-	return [[[Transformer alloc] init] autorelease];
+#if __has_feature(objc_arc)
+    return [[Transformer alloc] init];
+#else
+    return [[[Transformer alloc] init] autorelease];
+#endif
 }
 
 + (Transformer*)transformerWithTransformer:(Transformer*)t {
-	return [[t copy] autorelease];
+#if __has_feature(objc_arc)
+    return [t copy];
+#else
+    return [[t copy] autorelease];
+#endif
 }
 
 + (Transformer*)transformerWithOrigin:(NSPoint)o andScale:(float)scale {
diff --git a/tikzit/src/common/tikzlexer.lm b/tikzit/src/common/tikzlexer.lm
index 96690d2..1e92f73 100644
--- a/tikzit/src/common/tikzlexer.lm
+++ b/tikzit/src/common/tikzlexer.lm
@@ -37,6 +37,7 @@
 %option header-file="common/tikzlexer.h"
 %option extra-type="TikzGraphAssembler *"
 
+
 %s props
 %s xcoord
 %s ycoord
diff --git a/tikzit/src/common/tikzparser.ym b/tikzit/src/common/tikzparser.ym
index a6dc1ee..344e969 100644
--- a/tikzit/src/common/tikzparser.ym
+++ b/tikzit/src/common/tikzparser.ym
@@ -41,11 +41,11 @@
 
 /* possible data types for semantic values */
 %union {
-	NSPoint pt;
-	NSString *nsstr;
-	GraphElementProperty *prop;
-	GraphElementData *data;
-	Node *node;
+    NSString *nsstr;
+    GraphElementProperty *prop;
+    GraphElementData *data;
+    Node *node;
+    NSPoint pt;
 	struct noderef noderef;
 }
 
@@ -166,7 +166,9 @@ node: "\\node" optproperties nodename "at" COORD DELIMITEDSTRING ";"
 		[node setLabel:$6];
 		[assembler addNodeToMap:node];
 		[[assembler graph] addNode:node];
+#if ! __has_feature(objc_arc)
 		[node release];
+#endif
 	};
 
 optanchor:  { $$ = nil; } | "." REFSTRING { $$ = $2; };
@@ -204,7 +206,9 @@ edge: "\\draw" optproperties noderef "to" optedgenode optnoderef ";"
 		}
 		[edge setAttributesFromData];
 		[[assembler graph] addEdge:edge];
+#if ! __has_feature(objc_arc)
 		[edge release];
+#endif
 	};
 
 ignoreprop: val | val "=" val;
diff --git a/tikzit/src/common/tikzparserdefs.h b/tikzit/src/common/tikzparserdefs.h
index 587bcd6..cde3345 100644
--- a/tikzit/src/common/tikzparserdefs.h
+++ b/tikzit/src/common/tikzparserdefs.h
@@ -37,8 +37,13 @@
 @class Node;
 
 struct noderef {
-	Node *node;
-	NSString *anchor;
+#if __has_feature(objc_arc)
+    __unsafe_unretained Node *node;
+    __unsafe_unretained NSString *anchor;
+#else
+    Node *node;
+    NSString *anchor;
+#endif
 };
 
 // vi:ft=objc:noet:ts=4:sts=4:sw=4
diff --git a/tikzit/src/osx/AppDelegate.h b/tikzit/src/osx/AppDelegate.h
index 64acc38..92d9add 100644
--- a/tikzit/src/osx/AppDelegate.h
+++ b/tikzit/src/osx/AppDelegate.h
@@ -28,7 +28,7 @@
 #import "PreambleController.h"
 #import "PreviewController.h"
 #import "GraphicsView.h"
-#import "PreferenceController.h";
+#import "PreferenceController.h"
 
 @interface AppDelegate : NSObject {
 	NSMapTable *table;
@@ -43,7 +43,7 @@
 }
 
 @property IBOutlet StylePaletteController *stylePaletteController;
-@property IBOutlet ToolPaletteController *toolPaletteController;
+@property (strong) IBOutlet ToolPaletteController *toolPaletteController;
 
 - (void)awakeFromNib;
 + (void)setDefaults;
diff --git a/tikzit/src/osx/AppDelegate.m b/tikzit/src/osx/AppDelegate.m
index 35484b7..94f5507 100644
--- a/tikzit/src/osx/AppDelegate.m
+++ b/tikzit/src/osx/AppDelegate.m
@@ -110,7 +110,7 @@
 }
 
 - (IBAction)togglePreamble:(id)sender {
-	[self toggleController:preambleController];
+	[self toggleController:(NSWindowController *) preambleController];
 }
 
 - (IBAction)togglePreferences:(id)sender {
diff --git a/tikzit/src/osx/CustomNodeCellView.h b/tikzit/src/osx/CustomNodeCellView.h
new file mode 100644
index 0000000..22606d7
--- /dev/null
+++ b/tikzit/src/osx/CustomNodeCellView.h
@@ -0,0 +1,23 @@
+//
+//  CustomNodeCellView.h
+//  TikZiT
+//
+//  Created by Johan Paulsson on 12/12/13.
+//  Copyright (c) 2013 Aleks Kissinger. All rights reserved.
+//
+
+#import <Cocoa/Cocoa.h>
+
+#import "NodeLayer.h"
+#import "NodeStyle.h"
+#import "NodeStyle+Coder.h"
+
+@interface CustomNodeCellView : NSTableCellView{
+    NodeLayer *nodeLayer;
+    NodeStyle *nodeStyle;
+    BOOL selected;
+}
+
+@property (strong) id objectValue;
+
+@end
diff --git a/tikzit/src/osx/CustomNodeCellView.m b/tikzit/src/osx/CustomNodeCellView.m
new file mode 100644
index 0000000..612394b
--- /dev/null
+++ b/tikzit/src/osx/CustomNodeCellView.m
@@ -0,0 +1,83 @@
+//
+//  CustomNodeCellView.m
+//  TikZiT
+//
+//  Created by Johan Paulsson on 12/12/13.
+//  Copyright (c) 2013 Aleks Kissinger. All rights reserved.
+//
+
+#import "CustomNodeCellView.h"
+
+@implementation CustomNodeCellView
+
+- (id)initWithFrame:(NSRect)frame
+{
+    self = [super initWithFrame:frame];
+    if (self) {
+        // Initialization code here.
+    }
+    return self;
+}
+
+- (void)drawRect:(NSRect)dirtyRect
+{
+	[super drawRect:dirtyRect];
+	
+    // Drawing code here.
+}
+
+- (id) objectValue{
+    return [super objectValue];
+}
+
+-(void)drawLayer:(CALayer *)layer inContext:(CGContextRef)context {
+    if (nodeLayer!=nil) {
+		if (![[[self layer] sublayers] containsObject:nodeLayer]) {
+			[[self layer] addSublayer:nodeLayer];
+			NSPoint c = NSMakePoint((CGRectGetMinX([[self layer] frame])+CGRectGetWidth([nodeLayer bounds])/2),
+									CGRectGetMidY([[self layer] frame]));
+            //c = NSMakePoint(-16.5,-16.5);
+			[nodeLayer setCenter:c andAnimateWhen:NO];
+            [[self textField] setFrame:NSMakeRect(CGRectGetWidth([nodeLayer bounds]), CGRectGetMidY([[self layer] frame]), CGRectGetWidth([[self textField] frame]), CGRectGetHeight([[self textField] frame]))];
+		}
+		
+		if (selected){
+            [nodeStyle setStrokeColor:[NSColor whiteColor]];
+            [[nodeLayer node] setStyle:nodeStyle];
+        }else{
+            [nodeStyle setStrokeColor:[NSColor blackColor]];
+            [[nodeLayer node] setStyle:nodeStyle];
+		}
+        
+		[nodeLayer updateFrame];
+	}
+}
+
+- (void) setObjectValue:(id)objectValue{
+    if(objectValue == nil)
+        return;
+    
+    nodeStyle = (NodeStyle *)objectValue;
+    [[self textField] setStringValue:[nodeStyle shapeName]];
+    
+	if (nodeLayer == nil) {
+		nodeLayer = [[NodeLayer alloc] initWithNode:[Node node]
+										transformer:[Transformer defaultTransformer]];
+		[nodeLayer setRescale:NO];
+	}
+    [nodeStyle setName:[nodeStyle shapeName]];
+	
+	[[nodeLayer node] setStyle:nodeStyle];
+	[nodeLayer updateFrame];
+    
+    NSLog(@"asd");
+}
+
+- (void)setBackgroundStyle:(NSBackgroundStyle)backgroundStyle {
+    [super setBackgroundStyle:backgroundStyle];
+    
+    selected = (backgroundStyle == NSBackgroundStyleDark);
+    [self setNeedsDisplay:YES];
+}
+
+@end
diff --git a/tikzit/src/osx/CustomNodeController.h b/tikzit/src/osx/CustomNodeController.h
new file mode 100644
index 0000000..67adf0b
--- /dev/null
+++ b/tikzit/src/osx/CustomNodeController.h
@@ -0,0 +1,35 @@
+//
+//  CustomNodeController.h
+//  TikZiT
+//
+//  Created by Johan Paulsson on 12/4/13.
+//  Copyright (c) 2013 Aleks Kissinger. All rights reserved.
+//
+
+#import <Cocoa/Cocoa.h>
+#import "Shape.h"
+#import "TikzShape.h"
+
+#import "GraphicsView.h"
+#import "TikzSourceController.h"
+
+#import "SupportDir.h"
+
+@interface CustomNodeController : NSViewController <NSTableViewDelegate>{
+    NSDictionary *nodeStyles;
+    NSMutableArray* customNodeStyles;
+    
+	GraphicsView *__weak graphicsView;
+	TikzSourceController *__weak tikzSourceController;
+    NSTableView *customNodeTable;
+}
+
+@property NSDictionary *nodeStyles;
+@property NSMutableArray* customNodeStyles;
+
+@property IBOutlet NSTableView *customNodeTable;
+
+@property (weak) IBOutlet GraphicsView *graphicsView;
+@property (weak) IBOutlet TikzSourceController *tikzSourceController;
+
+@end
diff --git a/tikzit/src/osx/CustomNodeController.m b/tikzit/src/osx/CustomNodeController.m
new file mode 100644
index 0000000..4f46acc
--- /dev/null
+++ b/tikzit/src/osx/CustomNodeController.m
@@ -0,0 +1,58 @@
+//
+//  CustomNodeController.m
+//  TikZiT
+//
+//  Created by Johan Paulsson on 12/4/13.
+//  Copyright (c) 2013 Aleks Kissinger. All rights reserved.
+//
+
+#import "CustomNodeController.h"
+#import "NodeStyle.h"
+
+@interface CustomNodeController ()
+
+@end
+
+@implementation CustomNodeController
+
+@synthesize nodeStyles, customNodeStyles;
+@synthesize graphicsView, tikzSourceController;
+@synthesize customNodeTable;
+
+- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
+{
+    if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
+        nodeStyles = [Shape shapeDictionary];
+        customNodeStyles = [NSMutableArray array];
+        
+        for(id key in nodeStyles) {
+            Shape *value = [nodeStyles objectForKey:key];
+            
+            if([value isKindOfClass:[TikzShape class]]){
+                NodeStyle *newNodeStyle = [[NodeStyle alloc] init];
+                [newNodeStyle setShapeName:key];
+                
+                [customNodeStyles addObject:newNodeStyle];
+            }
+        }
+    }
+    
+    return self;
+}
+
+- (void)tableViewSelectionDidChange:(NSNotification *)aNotification{
+    NSInteger selectedRow = [customNodeTable selectedRow];
+    
+    NodeStyle* selectedNodeStyle = [customNodeStyles objectAtIndex:selectedRow];
+    TikzShape *tikzshape = (TikzShape *) [nodeStyles objectForKey:[selectedNodeStyle shapeName]];
+    
+    [[tikzSourceController graphicsView] setEnabled:NO];
+    [tikzSourceController setTikz:[tikzshape tikzSrc]];
+    [tikzSourceController parseTikz:self];
+}
+
+- (id)valueForUndefinedKey:(NSString *)key{
+    return nil;
+}
+
+@end
diff --git a/tikzit/src/osx/CustomNodes.xib b/tikzit/src/osx/CustomNodes.xib
new file mode 100644
index 0000000..1cc8db2
--- /dev/null
+++ b/tikzit/src/osx/CustomNodes.xib
@@ -0,0 +1,249 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="5053" systemVersion="13B42" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES">
+    <dependencies>
+        <deployment defaultVersion="1070" identifier="macosx"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="5053"/>
+    </dependencies>
+    <objects>
+        <customObject id="-2" userLabel="File's Owner" customClass="CustomNodeController">
+            <connections>
+                <outlet property="graphicsView" destination="3MT-Yc-Dhv" id="9gg-fS-oBl"/>
+                <outlet property="tikzSourceController" destination="il5-cQ-3oh" id="Wny-jd-sKZ"/>
+                <outlet property="view" destination="1" id="sH5-DU-xwB"/>
+            </connections>
+        </customObject>
+        <customObject id="-1" userLabel="First Responder" customClass="FirstResponder"/>
+        <customObject id="-3" userLabel="Application"/>
+        <arrayController objectClassName="NodeStyle" id="iyU-U5-XAU" userLabel="Node Style Array Controller">
+            <declaredKeys>
+                <string>name</string>
+                <string>strokeThickness</string>
+                <string>strokeColor</string>
+                <string>fillColor</string>
+                <string>strokeColorIsKnown</string>
+                <string>fillColorIsKnown</string>
+                <string>representedObject.name</string>
+                <string>shapeName</string>
+                <string>scale</string>
+                <string>@distinctUnionOfObjects.category</string>
+                <string>category</string>
+            </declaredKeys>
+            <connections>
+                <binding destination="-2" name="contentArray" keyPath="onodeStyles" id="Yzy-xv-qEa"/>
+            </connections>
+        </arrayController>
+        <customObject id="il5-cQ-3oh" customClass="TikzSourceController">
+            <connections>
+                <outlet property="errorMessage" destination="6rJ-4b-syy" id="cin-Wb-6uD"/>
+                <outlet property="errorNotification" destination="R3k-mz-hMn" id="jtn-fQ-Amk"/>
+                <outlet property="graphicsView" destination="3MT-Yc-Dhv" id="hK1-h1-Dsr"/>
+                <outlet property="sourceView" destination="QXu-0d-uF0" id="SEj-FL-5Ac"/>
+                <outlet property="status" destination="6rJ-4b-syy" id="lVN-cK-3Cb"/>
+            </connections>
+        </customObject>
+        <customView id="1">
+            <rect key="frame" x="0.0" y="0.0" width="480" height="272"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+            <subviews>
+                <splitView dividerStyle="thin" vertical="YES" translatesAutoresizingMaskIntoConstraints="NO" id="DO1-FS-fZd">
+                    <rect key="frame" x="0.0" y="0.0" width="480" height="272"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                    <subviews>
+                        <scrollView fixedFrame="YES" autohidesScrollers="YES" horizontalLineScroll="32" horizontalPageScroll="10" verticalLineScroll="32" verticalPageScroll="10" usesPredominantAxisScrolling="NO" id="Ry0-48-577">
+                            <rect key="frame" x="0.0" y="0.0" width="117" height="272"/>
+                            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                            <clipView key="contentView" id="9D3-br-lEi">
+                                <rect key="frame" x="1" y="1" width="115" height="270"/>
+                                <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                <subviews>
+                                    <tableView verticalHuggingPriority="750" allowsExpansionToolTips="YES" columnAutoresizingStyle="lastColumnOnly" columnReordering="NO" columnSelection="YES" columnResizing="NO" multipleSelection="NO" autosaveColumns="NO" rowHeight="30" rowSizeStyle="automatic" viewBased="YES" id="ieg-vU-MzM">
+                                        <rect key="frame" x="0.0" y="0.0" width="115" height="270"/>
+                                        <autoresizingMask key="autoresizingMask"/>
+                                        <size key="intercellSpacing" width="3" height="2"/>
+                                        <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                                        <color key="gridColor" name="gridColor" catalog="System" colorSpace="catalog"/>
+                                        <tableColumns>
+                                            <tableColumn width="112" minWidth="40" maxWidth="1000" id="k91-pc-nbl">
+                                                <tableHeaderCell key="headerCell" lineBreakMode="truncatingTail" borderStyle="border" alignment="left">
+                                                    <font key="font" metaFont="smallSystem"/>
+                                                    <color key="textColor" name="headerTextColor" catalog="System" colorSpace="catalog"/>
+                                                    <color key="backgroundColor" white="0.33333298560000002" alpha="1" colorSpace="calibratedWhite"/>
+                                                </tableHeaderCell>
+                                                <textFieldCell key="dataCell" lineBreakMode="truncatingTail" selectable="YES" editable="YES" alignment="left" title="Text Cell" id="ZaR-9P-sAp">
+                                                    <font key="font" metaFont="system"/>
+                                                    <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                                                    <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                                                </textFieldCell>
+                                                <tableColumnResizingMask key="resizingMask" resizeWithTable="YES" userResizable="YES"/>
+                                                <prototypeCellViews>
+                                                    <tableCellView id="0ce-nA-hcl" customClass="CustomNodeCellView">
+                                                        <rect key="frame" x="1" y="1" width="112" height="30"/>
+                                                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                                        <subviews>
+                                                            <textField verticalHuggingPriority="750" horizontalCompressionResistancePriority="250" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="KUl-Qh-CHH">
+                                                                <rect key="frame" x="36" y="3" width="87" height="17"/>
+                                                                <autoresizingMask key="autoresizingMask" widthSizable="YES" flexibleMinY="YES"/>
+                                                                <textFieldCell key="cell" lineBreakMode="truncatingTail" selectable="YES" editable="YES" title="Table View Cell" id="92K-au-Qpa">
+                                                                    <font key="font" metaFont="system"/>
+                                                                    <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                                                                    <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
+                                                                    <connections>
+                                                                        <binding destination="0ce-nA-hcl" name="value" keyPath="objectValue" id="06y-KE-8wP"/>
+                                                                    </connections>
+                                                                </textFieldCell>
+                                                            </textField>
+                                                        </subviews>
+                                                        <connections>
+                                                            <outlet property="textField" destination="KUl-Qh-CHH" id="Cze-5m-UmF"/>
+                                                        </connections>
+                                                    </tableCellView>
+                                                </prototypeCellViews>
+                                            </tableColumn>
+                                        </tableColumns>
+                                        <connections>
+                                            <binding destination="-2" name="selectionIndexes" keyPath="selectedNode" id="C4J-62-GDG"/>
+                                            <outlet property="delegate" destination="-2" id="M05-fU-pjz"/>
+                                        </connections>
+                                    </tableView>
+                                </subviews>
+                                <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                            </clipView>
+                            <scroller key="horizontalScroller" hidden="YES" verticalHuggingPriority="750" horizontal="YES" id="QIL-7j-JmC">
+                                <rect key="frame" x="1" y="256" width="0.0" height="15"/>
+                                <autoresizingMask key="autoresizingMask"/>
+                            </scroller>
+                            <scroller key="verticalScroller" hidden="YES" verticalHuggingPriority="750" horizontal="NO" id="ElP-ub-Uwa">
+                                <rect key="frame" x="224" y="17" width="15" height="102"/>
+                                <autoresizingMask key="autoresizingMask"/>
+                            </scroller>
+                        </scrollView>
+                        <view fixedFrame="YES" id="F5P-T2-9eB">
+                            <rect key="frame" x="118" y="0.0" width="362" height="272"/>
+                            <autoresizingMask key="autoresizingMask"/>
+                            <subviews>
+                                <splitView fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="KKi-SZ-dS6">
+                                    <rect key="frame" x="0.0" y="0.0" width="362" height="272"/>
+                                    <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                    <subviews>
+                                        <customView fixedFrame="YES" id="d61-FR-v2c">
+                                            <rect key="frame" x="0.0" y="0.0" width="362" height="156"/>
+                                            <autoresizingMask key="autoresizingMask"/>
+                                            <subviews>
+                                                <customView wantsLayer="YES" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="3MT-Yc-Dhv" customClass="GraphicsView">
+                                                    <rect key="frame" x="0.0" y="0.0" width="362" height="155"/>
+                                                    <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                                </customView>
+                                                <customView wantsLayer="YES" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="R3k-mz-hMn" customClass="ParseErrorView">
+                                                    <rect key="frame" x="0.0" y="113" width="361" height="42"/>
+                                                    <autoresizingMask key="autoresizingMask" widthSizable="YES" flexibleMinY="YES"/>
+                                                    <subviews>
+                                                        <textField verticalHuggingPriority="750" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="6rJ-4b-syy">
+                                                            <rect key="frame" x="5" y="10" width="354" height="27"/>
+                                                            <autoresizingMask key="autoresizingMask" widthSizable="YES" flexibleMaxX="YES" flexibleMinY="YES"/>
+                                                            <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" allowsUndo="NO" sendsActionOnEndEditing="YES" alignment="left" placeholderString="parser information" allowsEditingTextAttributes="YES" id="3y1-Zn-Hv4">
+                                                                <font key="font" metaFont="smallSystem"/>
+                                                                <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                                                                <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                                                            </textFieldCell>
+                                                        </textField>
+                                                        <button wantsLayer="YES" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="Et8-Cc-Xac">
+                                                            <rect key="frame" x="340" y="21" width="17" height="19"/>
+                                                            <autoresizingMask key="autoresizingMask" flexibleMinX="YES" flexibleMinY="YES"/>
+                                                            <buttonCell key="cell" type="squareTextured" bezelStyle="texturedSquare" image="NSStopProgressFreestandingTemplate" imagePosition="only" alignment="center" state="on" imageScaling="proportionallyDown" id="7vB-Le-tP4">
+                                                                <behavior key="behavior" lightByBackground="YES" lightByGray="YES"/>
+                                                                <font key="font" metaFont="system"/>
+                                                            </buttonCell>
+                                                            <connections>
+                                                                <action selector="closeParseError:" target="il5-cQ-3oh" id="jdZ-7K-cwe"/>
+                                                            </connections>
+                                                        </button>
+                                                    </subviews>
+                                                </customView>
+                                            </subviews>
+                                        </customView>
+                                        <customView fixedFrame="YES" id="Fal-9S-dwR">
+                                            <rect key="frame" x="0.0" y="165" width="362" height="107"/>
+                                            <autoresizingMask key="autoresizingMask"/>
+                                            <subviews>
+                                                <scrollView fixedFrame="YES" horizontalLineScroll="10" horizontalPageScroll="10" verticalLineScroll="10" verticalPageScroll="10" hasHorizontalScroller="NO" usesPredominantAxisScrolling="NO" translatesAutoresizingMaskIntoConstraints="NO" id="yLp-gf-r49">
+                                                    <rect key="frame" x="0.0" y="0.0" width="362" height="107"/>
+                                                    <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                                    <clipView key="contentView" ambiguous="YES" misplaced="YES" id="qOT-id-lqk">
+                                                        <rect key="frame" x="1" y="1" width="345" height="105"/>
+                                                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                                        <subviews>
+                                                            <textView ambiguous="YES" importsGraphics="NO" richText="NO" findStyle="panel" allowsUndo="YES" usesRuler="YES" verticallyResizable="YES" allowsNonContiguousLayout="YES" spellingCorrection="YES" smartInsertDelete="YES" id="QXu-0d-uF0">
+                                                                <rect key="frame" x="0.0" y="0.0" width="345" height="105"/>
+                                                                <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                                                <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                                                                <size key="minSize" width="345" height="105"/>
+                                                                <size key="maxSize" width="877" height="10000000"/>
+                                                                <attributedString key="textStorage">
+                                                                    <fragment>
+                                                                        <string key="content">\begin{tikzpicture}
+
+\end{tikzpicture}</string>
+                                                                        <attributes>
+                                                                            <font key="NSFont" metaFont="toolTip"/>
+                                                                            <paragraphStyle key="NSParagraphStyle" alignment="natural" lineBreakMode="wordWrapping" baseWritingDirection="natural"/>
+                                                                        </attributes>
+                                                                    </fragment>
+                                                                </attributedString>
+                                                                <color key="insertionPointColor" white="0.0" alpha="1" colorSpace="calibratedWhite"/>
+                                                                <size key="minSize" width="345" height="105"/>
+                                                                <size key="maxSize" width="877" height="10000000"/>
+                                                                <connections>
+                                                                    <binding destination="il5-cQ-3oh" name="attributedString" keyPath="source" id="15z-o3-4ni"/>
+                                                                    <outlet property="delegate" destination="il5-cQ-3oh" id="9Mr-J3-zvR"/>
+                                                                </connections>
+                                                            </textView>
+                                                        </subviews>
+                                                        <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                                                    </clipView>
+                                                    <scroller key="horizontalScroller" hidden="YES" verticalHuggingPriority="750" doubleValue="1" horizontal="YES" id="BYM-Xm-JpT">
+                                                        <rect key="frame" x="-100" y="-100" width="87" height="18"/>
+                                                        <autoresizingMask key="autoresizingMask"/>
+                                                    </scroller>
+                                                    <scroller key="verticalScroller" verticalHuggingPriority="750" doubleValue="0.90909090909090906" horizontal="NO" id="SEU-Jq-fwu">
+                                                        <rect key="frame" x="346" y="1" width="15" height="105"/>
+                                                        <autoresizingMask key="autoresizingMask"/>
+                                                    </scroller>
+                                                </scrollView>
+                                            </subviews>
+                                        </customView>
+                                    </subviews>
+                                    <holdingPriorities>
+                                        <real value="250"/>
+                                        <real value="250"/>
+                                    </holdingPriorities>
+                                </splitView>
+                                <textField verticalHuggingPriority="750" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="esG-a3-KD7">
+                                    <rect key="frame" x="220" y="-184" width="128" height="14"/>
+                                    <autoresizingMask key="autoresizingMask" flexibleMinX="YES" flexibleMaxY="YES"/>
+                                    <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" sendsActionOnEndEditing="YES" alignment="right" id="7uu-y8-NcI">
+                                        <font key="font" metaFont="smallSystem"/>
+                                        <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                                        <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
+                                    </textFieldCell>
+                                </textField>
+                            </subviews>
+                        </view>
+                    </subviews>
+                    <holdingPriorities>
+                        <real value="250"/>
+                        <real value="250"/>
+                    </holdingPriorities>
+                </splitView>
+            </subviews>
+            <constraints>
+                <constraint firstAttribute="trailing" secondItem="DO1-FS-fZd" secondAttribute="trailing" id="Bow-1P-jx4"/>
+                <constraint firstAttribute="bottom" secondItem="DO1-FS-fZd" secondAttribute="bottom" id="c94-eC-Rhp"/>
+                <constraint firstItem="DO1-FS-fZd" firstAttribute="leading" secondItem="1" secondAttribute="leading" id="j1G-Ag-RLs"/>
+                <constraint firstItem="DO1-FS-fZd" firstAttribute="top" secondItem="1" secondAttribute="top" id="tBr-89-Ipp"/>
+            </constraints>
+        </customView>
+    </objects>
+    <resources>
+        <image name="NSStopProgressFreestandingTemplate" width="12" height="12"/>
+    </resources>
+</document>
diff --git a/tikzit/src/osx/EdgeControlLayer.m b/tikzit/src/osx/EdgeControlLayer.m
index 377cde4..facdd84 100644
--- a/tikzit/src/osx/EdgeControlLayer.m
+++ b/tikzit/src/osx/EdgeControlLayer.m
@@ -29,7 +29,7 @@
 
 
 - (id)initWithEdge:(Edge*)e andTransformer:(Transformer*)t {
-	[super init];
+	if (!(self = [super init])) return nil;
 	transformer = t;
 	edge = e;
 	self.opacity = 0.0f;
diff --git a/tikzit/src/osx/EdgeStyle+Coder.m b/tikzit/src/osx/EdgeStyle+Coder.m
index 208fac0..039344d 100644
--- a/tikzit/src/osx/EdgeStyle+Coder.m
+++ b/tikzit/src/osx/EdgeStyle+Coder.m
@@ -26,7 +26,7 @@
 @implementation EdgeStyle (Coder)
 
 - (id)initWithCoder:(NSCoder*)coder {
-	[super init];
+	if (!(self = [super init])) return nil;
 	
     name = [coder decodeObjectForKey:@"name"];
     category = [coder decodeObjectForKey:@"category"];
diff --git a/tikzit/src/osx/GraphicsView.h b/tikzit/src/osx/GraphicsView.h
index e963ac7..329b1e5 100644
--- a/tikzit/src/osx/GraphicsView.h
+++ b/tikzit/src/osx/GraphicsView.h
@@ -96,7 +96,7 @@ typedef enum {
 }
 
 @property BOOL enabled;
-@property Graph *graph;
+@property (weak) Graph *graph;
 @property IBOutlet TikzSourceController *tikzSourceController;
 @property (readonly) Transformer *transformer;
 @property (readonly) PickSupport *pickSupport;
diff --git a/tikzit/src/osx/Grid.m b/tikzit/src/osx/Grid.m
index 3e412a3..aa35c1f 100644
--- a/tikzit/src/osx/Grid.m
+++ b/tikzit/src/osx/Grid.m
@@ -32,7 +32,7 @@
 		 subdivisions:(int)subs
 		  transformer:(Transformer*)t
 {
-	[super init];
+	if (!(self = [super init])) return nil;
 	gridX = spacing;
 	gridY = spacing;
 	subdivisions = subs;
diff --git a/tikzit/src/osx/NilToEmptyStringTransformer.m b/tikzit/src/osx/NilToEmptyStringTransformer.m
index 97267e3..413f404 100644
--- a/tikzit/src/osx/NilToEmptyStringTransformer.m
+++ b/tikzit/src/osx/NilToEmptyStringTransformer.m
@@ -26,7 +26,7 @@
 @implementation NilToEmptyStringTransformer
 
 - (id)init {
-    [super init];
+    if (!(self = [super init])) return nil;
     return self;
 }
 
diff --git a/tikzit/src/osx/NodeLayer.h b/tikzit/src/osx/NodeLayer.h
index dfe05e8..dbcdac5 100644
--- a/tikzit/src/osx/NodeLayer.h
+++ b/tikzit/src/osx/NodeLayer.h
@@ -42,10 +42,10 @@
     BOOL dirty; // need to rebuild CGBezierPath of the shape
 }
 
-@property Node *node;
+@property (strong) Node *node;
 @property (assign) NSPoint center;
 @property (assign) BOOL rescale;
-@property (retain) NodeSelectionLayer *selection;
+@property (strong) NodeSelectionLayer *selection;
 @property (readonly) CGMutablePathRef path;
 
 - (id)initWithNode:(Node*)n transformer:(Transformer*)t;
diff --git a/tikzit/src/osx/NodeLayer.m b/tikzit/src/osx/NodeLayer.m
index 2c37c26..5d15585 100644
--- a/tikzit/src/osx/NodeLayer.m
+++ b/tikzit/src/osx/NodeLayer.m
@@ -34,7 +34,7 @@
 @synthesize node, selection, rescale;
 
 - (id)initWithNode:(Node *)n transformer:(Transformer*)t {
-	[super init];
+	if (!(self = [super init])) return nil;
 	node = n;
 	selection = [[NodeSelectionLayer alloc] init];
     [selection setNodeLayer:self];
@@ -233,7 +233,6 @@
 
 - (void)dealloc {
     if (path != NULL) CFRelease(path);
-    [super dealloc];
 }
 
 @end
diff --git a/tikzit/src/osx/NodeSelectionLayer.m b/tikzit/src/osx/NodeSelectionLayer.m
index 5efcbf7..02b8ac2 100644
--- a/tikzit/src/osx/NodeSelectionLayer.m
+++ b/tikzit/src/osx/NodeSelectionLayer.m
@@ -30,7 +30,7 @@
 @synthesize nodeLayer;
 
 - (id)init {
-	[super init];
+	if (!(self = [super init])) return nil;
 	selected = NO;
     drawLock = [[NSLock alloc] init];
     nodeLayer = nil;
diff --git a/tikzit/src/osx/NodeStyle+Coder.m b/tikzit/src/osx/NodeStyle+Coder.m
index 8da91c1..d3623f5 100644
--- a/tikzit/src/osx/NodeStyle+Coder.m
+++ b/tikzit/src/osx/NodeStyle+Coder.m
@@ -59,7 +59,7 @@
 }
 
 - (id)initWithCoder:(NSCoder *)coder {
-	[super init];
+	if (!(self = [super init])) return nil;
 	
 	// decode keys
 	name = [coder decodeObjectForKey:@"name"];
diff --git a/tikzit/src/osx/PreambleController.h b/tikzit/src/osx/PreambleController.h
index 3c7a7c3..5b0931d 100644
--- a/tikzit/src/osx/PreambleController.h
+++ b/tikzit/src/osx/PreambleController.h
@@ -38,8 +38,8 @@
 
 @property (readonly) BOOL useDefaultPreamble;
 @property (readonly) Preambles *preambles;
-@property (retain) NSAttributedString *preambleText;
-@property (retain) NSIndexSet *selectionIndexes;
+@property (strong) NSAttributedString *preambleText;
+@property (strong) NSIndexSet *selectionIndexes;
 
 - (id)initWithNibName:(NSString *)nibName plist:(NSString*)plist styles:(NSArray*)sty edges:(NSArray*)edg;
 - (void)savePreambles:(NSString*)plist;
diff --git a/tikzit/src/osx/PreambleController.m b/tikzit/src/osx/PreambleController.m
index 3e55eaf..206bb30 100644
--- a/tikzit/src/osx/PreambleController.m
+++ b/tikzit/src/osx/PreambleController.m
@@ -29,7 +29,7 @@
 @synthesize preambleText, preambles;
 
 - (id)initWithNibName:(NSString *)nibName plist:(NSString*)plist styles:(NSArray*)sty edges:(NSArray*)edg {
-	[super initWithNibName:nibName bundle:Nil];
+	if (!(self = [super initWithNibName:nibName bundle:Nil])) return nil;
 	
 	preambles = (Preambles*)[NSKeyedUnarchiver unarchiveObjectWithFile:plist];
 	[preambles setStyles:sty];
diff --git a/tikzit/src/osx/Preambles+Coder.m b/tikzit/src/osx/Preambles+Coder.m
index 6b9768a..5e468b2 100644
--- a/tikzit/src/osx/Preambles+Coder.m
+++ b/tikzit/src/osx/Preambles+Coder.m
@@ -27,7 +27,7 @@
 @implementation Preambles (Coder)
 
 - (id)initWithCoder:(NSCoder *)coder {
-	[super init];
+	if (!(self = [super init])) return nil;
 	selectedPreambleName = [coder decodeObjectForKey:@"selectedPreamble"];
 	preambleDict = [coder decodeObjectForKey:@"preambles"];
 	return self;
diff --git a/tikzit/src/osx/PreferenceController.h b/tikzit/src/osx/PreferenceController.h
index 5a14b72..b2b23f3 100644
--- a/tikzit/src/osx/PreferenceController.h
+++ b/tikzit/src/osx/PreferenceController.h
@@ -25,6 +25,7 @@
 #import <Cocoa/Cocoa.h>
 #import "UpdatePreferenceController.h"
 #import "PreambleController.h"
+#import "CustomNodeController.h"
 
 @interface PreferenceController : NSWindowController{
     
@@ -32,13 +33,17 @@
     IBOutlet NSView *generalView;
     IBOutlet NSView *updateView;
     IBOutlet NSView *preambleView;
+    IBOutlet NSView *customNodeView;
     
     UpdatePreferenceController *updateController;
     PreambleController *preambleController;
+    CustomNodeController *customNodeController;
     
     int currentViewTag;
 }
 
+- (id)initWithWindowNibName:(NSString *)windowNibName preambleController:(PreambleController *)pc;
+
 - (IBAction)switchView:(id)sender;
 
 @end
diff --git a/tikzit/src/osx/PreferenceController.m b/tikzit/src/osx/PreferenceController.m
index ab992ed..e785358 100644
--- a/tikzit/src/osx/PreferenceController.m
+++ b/tikzit/src/osx/PreferenceController.m
@@ -30,8 +30,8 @@
 
 @implementation PreferenceController
 
-- (id)initWithWindowNibName:(NSString *)windowNibName preambleController:(PreambleController*)pc{
-    [super initWithWindowNibName:windowNibName];
+- (id)initWithWindowNibName:(NSString *)windowNibName preambleController:(PreambleController *)pc{
+    if (!(self = [super initWithWindowNibName:windowNibName])) return nil;
     
     preambleController = pc;
     
@@ -69,6 +69,9 @@
         case 3:
             view = preambleView;
         break;
+        case 4:
+            view = customNodeView;
+        break;
     }
     
     return  view;
@@ -96,9 +99,14 @@
     [[[self window] contentView] replaceSubview:preambleView with:[preambleController view]];
     preambleView = [preambleController view];
     
-    [[self window] setContentSize:[preambleView frame].size];
-    [[[self window] contentView] addSubview:preambleView];
-    currentViewTag = 3;
+    customNodeController = [[CustomNodeController alloc] initWithNibName:@"CustomNodes" bundle:nil];
+    [[customNodeController view] setFrame:[customNodeView frame]];
+    [[[self window] contentView] replaceSubview:customNodeView with:[customNodeController view]];
+    customNodeView = [customNodeController view];
+    
+    [[self window] setContentSize:[engineView frame].size];
+    [[[self window] contentView] addSubview:engineView];
+    currentViewTag = 1;
 }
 
 - (IBAction)switchView:(id)sender {
diff --git a/tikzit/src/osx/Preferences.xib b/tikzit/src/osx/Preferences.xib
index 8247c8d..1be3f9f 100644
--- a/tikzit/src/osx/Preferences.xib
+++ b/tikzit/src/osx/Preferences.xib
@@ -2,13 +2,13 @@
 <archive type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="8.00">
 	<data>
 		<int key="IBDocument.SystemTarget">1070</int>
-		<string key="IBDocument.SystemVersion">13A603</string>
-		<string key="IBDocument.InterfaceBuilderVersion">4514</string>
-		<string key="IBDocument.AppKitVersion">1265</string>
-		<string key="IBDocument.HIToolboxVersion">695.00</string>
+		<string key="IBDocument.SystemVersion">13C64</string>
+		<string key="IBDocument.InterfaceBuilderVersion">5053</string>
+		<string key="IBDocument.AppKitVersion">1265.19</string>
+		<string key="IBDocument.HIToolboxVersion">697.40</string>
 		<object class="NSMutableDictionary" key="IBDocument.PluginVersions">
 			<string key="NS.key.0">com.apple.InterfaceBuilder.CocoaPlugin</string>
-			<string key="NS.object.0">4514</string>
+			<string key="NS.object.0">5053</string>
 		</object>
 		<array key="IBDocument.IntegratedClassDependencies">
 			<string>IBNSLayoutConstraint</string>
@@ -100,7 +100,7 @@
 							<string key="NSToolbarItemMaxSize">{0, 0}</string>
 							<bool key="NSToolbarItemEnabled">YES</bool>
 							<bool key="NSToolbarItemAutovalidates">YES</bool>
-							<int key="NSToolbarItemTag">0</int>
+							<int key="NSToolbarItemTag">1</int>
 							<bool key="NSToolbarIsUserRemovable">YES</bool>
 							<int key="NSToolbarItemVisibilityPriority">0</int>
 						</object>
@@ -126,6 +126,28 @@
 							<bool key="NSToolbarIsUserRemovable">YES</bool>
 							<int key="NSToolbarItemVisibilityPriority">0</int>
 						</object>
+						<object class="NSToolbarItem" key="CBA2626C-DD4C-4ADD-BD5D-26D21216D9A8" id="845520355">
+							<object class="NSMutableString" key="NSToolbarItemIdentifier">
+								<characters key="NS.bytes">CBA2626C-DD4C-4ADD-BD5D-26D21216D9A8</characters>
+							</object>
+							<string key="NSToolbarItemLabel">Custom Nodes</string>
+							<string key="NSToolbarItemPaletteLabel">Custom Nodes</string>
+							<string key="NSToolbarItemToolTip"/>
+							<nil key="NSToolbarItemView"/>
+							<object class="NSCustomResource" key="NSToolbarItemImage">
+								<string key="NSClassName">NSImage</string>
+								<string key="NSResourceName">customshape</string>
+							</object>
+							<nil key="NSToolbarItemTarget"/>
+							<nil key="NSToolbarItemAction"/>
+							<string key="NSToolbarItemMinSize">{0, 0}</string>
+							<string key="NSToolbarItemMaxSize">{0, 0}</string>
+							<bool key="NSToolbarItemEnabled">YES</bool>
+							<bool key="NSToolbarItemAutovalidates">YES</bool>
+							<int key="NSToolbarItemTag">4</int>
+							<bool key="NSToolbarIsUserRemovable">YES</bool>
+							<int key="NSToolbarItemVisibilityPriority">0</int>
+						</object>
 						<object class="NSToolbarItem" key="F85FE7C2-9847-4E58-8BF6-BE334E918CA7" id="641338426">
 							<object class="NSMutableString" key="NSToolbarItemIdentifier">
 								<characters key="NS.bytes">F85FE7C2-9847-4E58-8BF6-BE334E918CA7</characters>
@@ -149,15 +171,17 @@
 							<int key="NSToolbarItemVisibilityPriority">0</int>
 						</object>
 					</dictionary>
-					<array key="NSToolbarIBAllowedItems">
+					<array class="NSMutableArray" key="NSToolbarIBAllowedItems">
 						<reference ref="914743654"/>
 						<reference ref="224936444"/>
 						<reference ref="641338426"/>
 						<reference ref="265637031"/>
+						<reference ref="845520355"/>
 					</array>
 					<array key="NSToolbarIBDefaultItems">
+						<reference ref="914743654"/>
 						<reference ref="265637031"/>
-						<reference ref="641338426"/>
+						<reference ref="845520355"/>
 						<reference ref="224936444"/>
 					</array>
 					<array key="NSToolbarIBSelectableItems" id="0"/>
@@ -178,33 +202,33 @@
 				<reference key="NSNextResponder"/>
 				<int key="NSvFlags">268</int>
 				<array class="NSMutableArray" key="NSSubviews">
-					<object class="NSButton" id="764495169">
+					<object class="NSButton" id="521024449">
 						<reference key="NSNextResponder" ref="103531975"/>
 						<int key="NSvFlags">268</int>
-						<string key="NSFrame">{{18, 15}, {214, 18}}</string>
+						<string key="NSFrame">{{18, 106}, {219, 18}}</string>
 						<reference key="NSSuperview" ref="103531975"/>
 						<reference key="NSWindow"/>
 						<reference key="NSNextKeyView"/>
 						<string key="NSReuseIdentifierKey">_NS:9</string>
 						<bool key="NSEnabled">YES</bool>
-						<object class="NSButtonCell" key="NSCell" id="292348615">
+						<object class="NSButtonCell" key="NSCell" id="550678479">
 							<int key="NSCellFlags">-2080374784</int>
 							<int key="NSCellFlags2">268435456</int>
-							<string key="NSContents">Bring preview window to focus</string>
+							<string key="NSContents">Keep inspector windows on top</string>
 							<object class="NSFont" key="NSSupport" id="924461577">
 								<string key="NSName">.LucidaGrandeUI</string>
 								<double key="NSSize">13</double>
 								<int key="NSfFlags">1044</int>
 							</object>
 							<string key="NSCellIdentifier">_NS:9</string>
-							<reference key="NSControlView" ref="764495169"/>
+							<reference key="NSControlView" ref="521024449"/>
 							<int key="NSButtonFlags">1211912448</int>
 							<int key="NSButtonFlags2">2</int>
-							<object class="NSCustomResource" key="NSNormalImage">
+							<object class="NSCustomResource" key="NSNormalImage" id="959728078">
 								<string key="NSClassName">NSImage</string>
 								<string key="NSResourceName">NSSwitch</string>
 							</object>
-							<object class="NSButtonImageSource" key="NSAlternateImage">
+							<object class="NSButtonImageSource" key="NSAlternateImage" id="808033943">
 								<string key="NSImageName">NSSwitch</string>
 							</object>
 							<string key="NSAlternateContents"/>
@@ -214,10 +238,64 @@
 						</object>
 						<bool key="NSAllowsLogicalLayoutDirection">NO</bool>
 					</object>
+					<object class="NSButton" id="118735803">
+						<reference key="NSNextResponder" ref="103531975"/>
+						<int key="NSvFlags">268</int>
+						<string key="NSFrame">{{18, 126}, {168, 18}}</string>
+						<reference key="NSSuperview" ref="103531975"/>
+						<reference key="NSWindow"/>
+						<reference key="NSNextKeyView" ref="521024449"/>
+						<string key="NSReuseIdentifierKey">_NS:9</string>
+						<bool key="NSEnabled">YES</bool>
+						<object class="NSButtonCell" key="NSCell" id="63691474">
+							<int key="NSCellFlags">-2080374784</int>
+							<int key="NSCellFlags2">268435456</int>
+							<string key="NSContents">Autocomplete brackets</string>
+							<reference key="NSSupport" ref="924461577"/>
+							<string key="NSCellIdentifier">_NS:9</string>
+							<reference key="NSControlView" ref="118735803"/>
+							<int key="NSButtonFlags">1211912448</int>
+							<int key="NSButtonFlags2">2</int>
+							<reference key="NSNormalImage" ref="959728078"/>
+							<reference key="NSAlternateImage" ref="808033943"/>
+							<string key="NSAlternateContents"/>
+							<string key="NSKeyEquivalent"/>
+							<int key="NSPeriodicDelay">200</int>
+							<int key="NSPeriodicInterval">25</int>
+						</object>
+						<bool key="NSAllowsLogicalLayoutDirection">NO</bool>
+					</object>
+					<object class="NSButton" id="764495169">
+						<reference key="NSNextResponder" ref="103531975"/>
+						<int key="NSvFlags">268</int>
+						<string key="NSFrame">{{18, 18}, {214, 18}}</string>
+						<reference key="NSSuperview" ref="103531975"/>
+						<reference key="NSWindow"/>
+						<reference key="NSNextKeyView"/>
+						<string key="NSReuseIdentifierKey">_NS:9</string>
+						<bool key="NSEnabled">YES</bool>
+						<object class="NSButtonCell" key="NSCell" id="292348615">
+							<int key="NSCellFlags">-2080374784</int>
+							<int key="NSCellFlags2">268435456</int>
+							<string key="NSContents">Bring preview window to focus</string>
+							<reference key="NSSupport" ref="924461577"/>
+							<string key="NSCellIdentifier">_NS:9</string>
+							<reference key="NSControlView" ref="764495169"/>
+							<int key="NSButtonFlags">1211912448</int>
+							<int key="NSButtonFlags2">2</int>
+							<reference key="NSNormalImage" ref="959728078"/>
+							<reference key="NSAlternateImage" ref="808033943"/>
+							<string key="NSAlternateContents"/>
+							<string key="NSKeyEquivalent"/>
+							<int key="NSPeriodicDelay">200</int>
+							<int key="NSPeriodicInterval">25</int>
+						</object>
+						<bool key="NSAllowsLogicalLayoutDirection">NO</bool>
+					</object>
 					<object class="NSTextField" id="762565485">
 						<reference key="NSNextResponder" ref="103531975"/>
 						<int key="NSvFlags">268</int>
-						<string key="NSFrame">{{20, 39}, {440, 22}}</string>
+						<string key="NSFrame">{{20, 42}, {440, 22}}</string>
 						<reference key="NSSuperview" ref="103531975"/>
 						<reference key="NSWindow"/>
 						<reference key="NSNextKeyView" ref="764495169"/>
@@ -256,7 +334,7 @@
 					<object class="NSTextField" id="539123669">
 						<reference key="NSNextResponder" ref="103531975"/>
 						<int key="NSvFlags">268</int>
-						<string key="NSFrame">{{18, 69}, {140, 17}}</string>
+						<string key="NSFrame">{{18, 72}, {140, 17}}</string>
 						<reference key="NSSuperview" ref="103531975"/>
 						<reference key="NSWindow"/>
 						<reference key="NSNextKeyView" ref="762565485"/>
@@ -289,10 +367,10 @@
 						<int key="NSTextFieldAlignmentRectInsetsVersion">1</int>
 					</object>
 				</array>
-				<string key="NSFrameSize">{480, 96}</string>
+				<string key="NSFrameSize">{480, 162}</string>
 				<reference key="NSSuperview"/>
 				<reference key="NSWindow"/>
-				<reference key="NSNextKeyView" ref="539123669"/>
+				<reference key="NSNextKeyView" ref="118735803"/>
 				<string key="NSReuseIdentifierKey">_NS:9</string>
 				<string key="NSClassName">NSView</string>
 			</object>
@@ -329,6 +407,17 @@
 				<string key="NSReuseIdentifierKey">_NS:9</string>
 				<string key="NSClassName">NSView</string>
 			</object>
+			<object class="NSCustomView" id="443314002">
+				<reference key="NSNextResponder"/>
+				<int key="NSvFlags">12</int>
+				<array class="NSMutableArray" key="NSSubviews"/>
+				<string key="NSFrameSize">{557, 354}</string>
+				<reference key="NSSuperview"/>
+				<reference key="NSWindow"/>
+				<reference key="NSNextKeyView"/>
+				<string key="NSReuseIdentifierKey">_NS:9</string>
+				<string key="NSClassName">NSView</string>
+			</object>
 			<object class="NSUserDefaultsController" id="706090457">
 				<bool key="NSSharedInstance">YES</bool>
 			</object>
@@ -409,6 +498,22 @@
 				</object>
 				<object class="IBConnectionRecord">
 					<object class="IBOutletConnection" key="connection">
+						<string key="label">customNodeView</string>
+						<reference key="source" ref="1001"/>
+						<reference key="destination" ref="443314002"/>
+					</object>
+					<int key="connectionID">123</int>
+				</object>
+				<object class="IBConnectionRecord">
+					<object class="IBActionConnection" key="connection">
+						<string key="label">switchView:</string>
+						<reference key="source" ref="1001"/>
+						<reference key="destination" ref="845520355"/>
+					</object>
+					<int key="connectionID">125</int>
+				</object>
+				<object class="IBConnectionRecord">
+					<object class="IBOutletConnection" key="connection">
 						<string key="label">delegate</string>
 						<reference key="source" ref="1005"/>
 						<reference key="destination" ref="1001"/>
@@ -447,6 +552,38 @@
 					</object>
 					<int key="connectionID">62</int>
 				</object>
+				<object class="IBConnectionRecord">
+					<object class="IBBindingConnection" key="connection">
+						<string key="label">value: values.net.sourceforge.tikzit.autocomplete</string>
+						<reference key="source" ref="118735803"/>
+						<reference key="destination" ref="706090457"/>
+						<object class="NSNibBindingConnector" key="connector">
+							<reference key="NSSource" ref="118735803"/>
+							<reference key="NSDestination" ref="706090457"/>
+							<string key="NSLabel">value: values.net.sourceforge.tikzit.autocomplete</string>
+							<string key="NSBinding">value</string>
+							<string key="NSKeyPath">values.net.sourceforge.tikzit.autocomplete</string>
+							<int key="NSNibBindingConnectorVersion">2</int>
+						</object>
+					</object>
+					<int key="connectionID">149</int>
+				</object>
+				<object class="IBConnectionRecord">
+					<object class="IBBindingConnection" key="connection">
+						<string key="label">value: values.net.sourceforge.tikzit.inspectorsontop</string>
+						<reference key="source" ref="521024449"/>
+						<reference key="destination" ref="706090457"/>
+						<object class="NSNibBindingConnector" key="connector">
+							<reference key="NSSource" ref="521024449"/>
+							<reference key="NSDestination" ref="706090457"/>
+							<string key="NSLabel">value: values.net.sourceforge.tikzit.inspectorsontop</string>
+							<string key="NSBinding">value</string>
+							<string key="NSKeyPath">values.net.sourceforge.tikzit.inspectorsontop</string>
+							<int key="NSNibBindingConnectorVersion">2</int>
+						</object>
+					</object>
+					<int key="connectionID">150</int>
+				</object>
 			</array>
 			<object class="IBMutableOrderedSet" key="objectRecords">
 				<array key="orderedObjects">
@@ -496,6 +633,7 @@
 							<reference ref="914743654"/>
 							<reference ref="224936444"/>
 							<reference ref="265637031"/>
+							<reference ref="845520355"/>
 						</array>
 						<reference key="parent" ref="1005"/>
 					</object>
@@ -513,6 +651,24 @@
 						<int key="objectID">13</int>
 						<reference key="object" ref="103531975"/>
 						<array class="NSMutableArray" key="children">
+							<object class="IBNSLayoutConstraint" id="727314944">
+								<reference key="firstItem" ref="103531975"/>
+								<int key="firstAttribute">4</int>
+								<int key="relation">0</int>
+								<reference key="secondItem" ref="764495169"/>
+								<int key="secondAttribute">4</int>
+								<float key="multiplier">1</float>
+								<string key="multiplierString">1</string>
+								<object class="IBNSLayoutSymbolicConstant" key="constant">
+									<double key="value">20</double>
+								</object>
+								<float key="priority">1000</float>
+								<reference key="containingView" ref="103531975"/>
+								<int key="scoringType">8</int>
+								<float key="scoringTypeFloat">23</float>
+								<int key="contentType">3</int>
+								<bool key="placeholder">NO</bool>
+							</object>
 							<object class="IBNSLayoutConstraint" id="728277728">
 								<reference key="firstItem" ref="764495169"/>
 								<int key="firstAttribute">3</int>
@@ -520,6 +676,7 @@
 								<reference key="secondItem" ref="762565485"/>
 								<int key="secondAttribute">4</int>
 								<float key="multiplier">1</float>
+								<string key="multiplierString">1</string>
 								<object class="IBNSLayoutSymbolicConstant" key="constant">
 									<double key="value">8</double>
 								</object>
@@ -537,6 +694,7 @@
 								<reference key="secondItem" ref="103531975"/>
 								<int key="secondAttribute">5</int>
 								<float key="multiplier">1</float>
+								<string key="multiplierString">1</string>
 								<object class="IBNSLayoutSymbolicConstant" key="constant">
 									<double key="value">20</double>
 								</object>
@@ -554,6 +712,7 @@
 								<reference key="secondItem" ref="762565485"/>
 								<int key="secondAttribute">6</int>
 								<float key="multiplier">1</float>
+								<string key="multiplierString">1</string>
 								<object class="IBNSLayoutSymbolicConstant" key="constant">
 									<double key="value">20</double>
 								</object>
@@ -571,6 +730,7 @@
 								<reference key="secondItem" ref="539123669"/>
 								<int key="secondAttribute">4</int>
 								<float key="multiplier">1</float>
+								<string key="multiplierString">1</string>
 								<object class="IBNSLayoutSymbolicConstant" key="constant">
 									<double key="value">8</double>
 								</object>
@@ -588,6 +748,7 @@
 								<reference key="secondItem" ref="103531975"/>
 								<int key="secondAttribute">5</int>
 								<float key="multiplier">1</float>
+								<string key="multiplierString">1</string>
 								<object class="IBNSLayoutSymbolicConstant" key="constant">
 									<double key="value">20</double>
 								</object>
@@ -598,43 +759,101 @@
 								<int key="contentType">3</int>
 								<bool key="placeholder">NO</bool>
 							</object>
-							<object class="IBNSLayoutConstraint" id="338893657">
+							<object class="IBNSLayoutConstraint" id="559306534">
 								<reference key="firstItem" ref="539123669"/>
-								<int key="firstAttribute">3</int>
+								<int key="firstAttribute">5</int>
 								<int key="relation">0</int>
 								<reference key="secondItem" ref="103531975"/>
-								<int key="secondAttribute">3</int>
+								<int key="secondAttribute">5</int>
 								<float key="multiplier">1</float>
+								<string key="multiplierString">1</string>
+								<object class="IBNSLayoutSymbolicConstant" key="constant">
+									<double key="value">20</double>
+								</object>
+								<float key="priority">1000</float>
+								<reference key="containingView" ref="103531975"/>
+								<int key="scoringType">0</int>
+								<float key="scoringTypeFloat">29</float>
+								<int key="contentType">3</int>
+								<bool key="placeholder">NO</bool>
+							</object>
+							<object class="IBNSLayoutConstraint" id="852545348">
+								<reference key="firstItem" ref="521024449"/>
+								<int key="firstAttribute">5</int>
+								<int key="relation">0</int>
+								<reference key="secondItem" ref="539123669"/>
+								<int key="secondAttribute">5</int>
+								<float key="multiplier">1</float>
+								<string key="multiplierString">1</string>
 								<object class="IBLayoutConstant" key="constant">
-									<double key="value">10</double>
+									<double key="value">0.0</double>
+								</object>
+								<float key="priority">1000</float>
+								<reference key="containingView" ref="103531975"/>
+								<int key="scoringType">6</int>
+								<float key="scoringTypeFloat">24</float>
+								<int key="contentType">2</int>
+								<bool key="placeholder">NO</bool>
+							</object>
+							<object class="IBNSLayoutConstraint" id="750010708">
+								<reference key="firstItem" ref="521024449"/>
+								<int key="firstAttribute">3</int>
+								<int key="relation">0</int>
+								<reference key="secondItem" ref="118735803"/>
+								<int key="secondAttribute">4</int>
+								<float key="multiplier">1</float>
+								<string key="multiplierString">1</string>
+								<object class="IBNSLayoutSymbolicConstant" key="constant">
+									<double key="value">6</double>
 								</object>
 								<float key="priority">1000</float>
 								<reference key="containingView" ref="103531975"/>
-								<int key="scoringType">3</int>
-								<float key="scoringTypeFloat">9</float>
+								<int key="scoringType">6</int>
+								<float key="scoringTypeFloat">24</float>
 								<int key="contentType">3</int>
 								<bool key="placeholder">NO</bool>
 							</object>
-							<object class="IBNSLayoutConstraint" id="559306534">
-								<reference key="firstItem" ref="539123669"/>
+							<object class="IBNSLayoutConstraint" id="295298081">
+								<reference key="firstItem" ref="521024449"/>
 								<int key="firstAttribute">5</int>
 								<int key="relation">0</int>
-								<reference key="secondItem" ref="103531975"/>
+								<reference key="secondItem" ref="118735803"/>
 								<int key="secondAttribute">5</int>
 								<float key="multiplier">1</float>
+								<string key="multiplierString">1</string>
+								<object class="IBLayoutConstant" key="constant">
+									<double key="value">0.0</double>
+								</object>
+								<float key="priority">1000</float>
+								<reference key="containingView" ref="103531975"/>
+								<int key="scoringType">6</int>
+								<float key="scoringTypeFloat">24</float>
+								<int key="contentType">2</int>
+								<bool key="placeholder">NO</bool>
+							</object>
+							<object class="IBNSLayoutConstraint" id="956205451">
+								<reference key="firstItem" ref="118735803"/>
+								<int key="firstAttribute">3</int>
+								<int key="relation">0</int>
+								<reference key="secondItem" ref="103531975"/>
+								<int key="secondAttribute">3</int>
+								<float key="multiplier">1</float>
+								<string key="multiplierString">1</string>
 								<object class="IBNSLayoutSymbolicConstant" key="constant">
 									<double key="value">20</double>
 								</object>
 								<float key="priority">1000</float>
 								<reference key="containingView" ref="103531975"/>
-								<int key="scoringType">0</int>
-								<float key="scoringTypeFloat">29</float>
+								<int key="scoringType">8</int>
+								<float key="scoringTypeFloat">23</float>
 								<int key="contentType">3</int>
 								<bool key="placeholder">NO</bool>
 							</object>
 							<reference ref="539123669"/>
 							<reference ref="762565485"/>
 							<reference ref="764495169"/>
+							<reference ref="118735803"/>
+							<reference ref="521024449"/>
 						</array>
 						<reference key="parent" ref="0"/>
 					</object>
@@ -663,11 +882,6 @@
 						<reference key="parent" ref="103531975"/>
 					</object>
 					<object class="IBObjectRecord">
-						<int key="objectID">31</int>
-						<reference key="object" ref="338893657"/>
-						<reference key="parent" ref="103531975"/>
-					</object>
-					<object class="IBObjectRecord">
 						<int key="objectID">32</int>
 						<reference key="object" ref="762565485"/>
 						<array class="NSMutableArray" key="children">
@@ -744,6 +958,67 @@
 						<reference key="object" ref="265637031"/>
 						<reference key="parent" ref="338765480"/>
 					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">122</int>
+						<reference key="object" ref="443314002"/>
+						<reference key="parent" ref="0"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">124</int>
+						<reference key="object" ref="845520355"/>
+						<reference key="parent" ref="338765480"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">126</int>
+						<reference key="object" ref="727314944"/>
+						<reference key="parent" ref="103531975"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">127</int>
+						<reference key="object" ref="118735803"/>
+						<array class="NSMutableArray" key="children">
+							<reference ref="63691474"/>
+						</array>
+						<reference key="parent" ref="103531975"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">128</int>
+						<reference key="object" ref="63691474"/>
+						<reference key="parent" ref="118735803"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">130</int>
+						<reference key="object" ref="956205451"/>
+						<reference key="parent" ref="103531975"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">131</int>
+						<reference key="object" ref="521024449"/>
+						<array class="NSMutableArray" key="children">
+							<reference ref="550678479"/>
+						</array>
+						<reference key="parent" ref="103531975"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">132</int>
+						<reference key="object" ref="550678479"/>
+						<reference key="parent" ref="521024449"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">134</int>
+						<reference key="object" ref="295298081"/>
+						<reference key="parent" ref="103531975"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">135</int>
+						<reference key="object" ref="750010708"/>
+						<reference key="parent" ref="103531975"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">153</int>
+						<reference key="object" ref="852545348"/>
+						<reference key="parent" ref="103531975"/>
+					</object>
 				</array>
 			</object>
 			<dictionary class="NSMutableDictionary" key="flattenedProperties">
@@ -758,23 +1033,39 @@
 				<string key="118.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<string key="119.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<string key="12.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
+				<string key="122.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
+				<string key="124.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
+				<string key="126.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
+				<boolean value="NO" key="127.IBNSViewMetadataTranslatesAutoresizingMaskIntoConstraints"/>
+				<string key="127.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
+				<string key="128.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<array key="13.IBNSViewMetadataConstraints">
+					<reference ref="956205451"/>
+					<reference ref="295298081"/>
+					<reference ref="750010708"/>
+					<reference ref="852545348"/>
 					<reference ref="559306534"/>
-					<reference ref="338893657"/>
 					<reference ref="783720041"/>
 					<reference ref="921593038"/>
 					<reference ref="206376115"/>
 					<reference ref="116293249"/>
 					<reference ref="728277728"/>
+					<reference ref="727314944"/>
 				</array>
 				<string key="13.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
+				<string key="130.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
+				<boolean value="NO" key="131.IBNSViewMetadataTranslatesAutoresizingMaskIntoConstraints"/>
+				<string key="131.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
+				<string key="132.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
+				<string key="134.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
+				<string key="135.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<string key="14.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<boolean value="NO" key="15.IBNSViewMetadataTranslatesAutoresizingMaskIntoConstraints"/>
 				<string key="15.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
+				<string key="153.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<string key="16.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<string key="2.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<string key="30.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
-				<string key="31.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<boolean value="NO" key="32.IBNSViewMetadataTranslatesAutoresizingMaskIntoConstraints"/>
 				<string key="32.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
 				<string key="33.IBPluginDependency">com.apple.InterfaceBuilder.CocoaPlugin</string>
@@ -794,7 +1085,7 @@
 			<nil key="activeLocalization"/>
 			<dictionary class="NSMutableDictionary" key="localizations"/>
 			<nil key="sourceID"/>
-			<int key="maxID">121</int>
+			<int key="maxID">153</int>
 		</object>
 		<object class="IBClassDescriber" key="IBDocument.Classes">
 			<array class="NSMutableArray" key="referencedPartialClassDescriptions">
@@ -813,12 +1104,17 @@
 						</object>
 					</object>
 					<dictionary class="NSMutableDictionary" key="outlets">
+						<string key="customNodeView">NSView</string>
 						<string key="engineView">NSView</string>
 						<string key="generalView">NSView</string>
 						<string key="preambleView">NSView</string>
 						<string key="updateView">NSView</string>
 					</dictionary>
 					<dictionary class="NSMutableDictionary" key="toOneOutletInfosByName">
+						<object class="IBToOneOutletInfo" key="customNodeView">
+							<string key="name">customNodeView</string>
+							<string key="candidateClassName">NSView</string>
+						</object>
 						<object class="IBToOneOutletInfo" key="engineView">
 							<string key="name">engineView</string>
 							<string key="candidateClassName">NSView</string>
@@ -859,6 +1155,7 @@
 		<dictionary class="NSMutableDictionary" key="IBDocument.LastKnownImageSizes">
 			<string key="NSPreferencesGeneral">{32, 32}</string>
 			<string key="NSSwitch">{15, 15}</string>
+			<string key="customshape">{32, 32}</string>
 			<string key="engine">{32, 32}</string>
 			<string key="preamble">{32, 32}</string>
 			<string key="updates">{32, 32}</string>
diff --git a/tikzit/src/osx/PreviewController.m b/tikzit/src/osx/PreviewController.m
index 310c2ab..cf069b1 100644
--- a/tikzit/src/osx/PreviewController.m
+++ b/tikzit/src/osx/PreviewController.m
@@ -33,7 +33,7 @@ static PreviewController *preview = nil;
 - (id)initWithWindowNibName:(NSString*)nib
 		 preambleController:(PreambleController*)pc
 					tempDir:(NSString*)dir {
-	[super initWithWindowNibName:nib];
+	if (!(self = [super initWithWindowNibName:nib])) return nil;
 	tempDir = [dir copy];
 	typesetCount = 0;
 	preambleController = pc;
diff --git a/tikzit/src/osx/PropertyInspectorController.h b/tikzit/src/osx/PropertyInspectorController.h
index 0625f9b..663ee4a 100644
--- a/tikzit/src/osx/PropertyInspectorController.h
+++ b/tikzit/src/osx/PropertyInspectorController.h
@@ -52,11 +52,11 @@
 
 //@property (readonly) BOOL enableNodeDataControls;
 //@property (readonly) BOOL enableEdgeDataControls;
-@property (retain) NSMutableArray *selectedNodes;
-@property (retain) NSMutableArray *selectedEdges;
-@property (retain) NSMutableArray *sourceAnchorNames;
-@property (retain) NSMutableArray *targetAnchorNames;
-@property (retain) StylePaletteController *stylePaletteController;
+@property (strong) NSMutableArray *selectedNodes;
+@property (strong) NSMutableArray *selectedEdges;
+@property (strong) NSMutableArray *sourceAnchorNames;
+@property (strong) NSMutableArray *targetAnchorNames;
+@property (strong) StylePaletteController *stylePaletteController;
 
 - (id)initWithWindowNibName:(NSString *)windowNibName;
 - (void)graphSelectionChanged:(NSNotification*)notification;
diff --git a/tikzit/src/osx/PropertyInspectorController.m b/tikzit/src/osx/PropertyInspectorController.m
index 1411549..039a30f 100644
--- a/tikzit/src/osx/PropertyInspectorController.m
+++ b/tikzit/src/osx/PropertyInspectorController.m
@@ -25,7 +25,7 @@
 @synthesize sourceAnchorNames, targetAnchorNames;
 
 - (id)initWithWindowNibName:(NSString *)windowNibName {
-	[super initWithWindowNibName:windowNibName];
+	if (!(self = [super initWithWindowNibName:windowNibName])) return nil;
     
     noSelection = [[GraphElementData alloc] init];
     [noSelection setProperty:@"" forKey:@"No Selection"];
@@ -56,7 +56,12 @@
     [self setTargetAnchorNames: [[NSMutableArray alloc] initWithArray:[@"north south west east" componentsSeparatedByString:@" "]]];
 
     
-    [[self window] setLevel:NSNormalWindowLevel];
+    if ([[NSUserDefaults standardUserDefaults] boolForKey:@"net.sourceforge.tikzit.inspectorsontop"] == YES) {
+        [[self window] setLevel:NSFloatingWindowLevel];
+    } else {
+        [[self window] setLevel:NSNormalWindowLevel];
+    }
+
     [self showWindow:self];
 	return self;
 }
diff --git a/tikzit/src/osx/SelectBoxLayer.m b/tikzit/src/osx/SelectBoxLayer.m
index c198ffa..a7abe33 100644
--- a/tikzit/src/osx/SelectBoxLayer.m
+++ b/tikzit/src/osx/SelectBoxLayer.m
@@ -14,7 +14,7 @@
 @synthesize active;
 
 - (id)init {
-	[super init];
+	if (!(self = [super init])) return nil;
 	box = CGRectMake(0.0f, 0.0f, 0.0f, 0.0f);
 	active = NO;
 	return self;
@@ -42,7 +42,7 @@
 }
 
 + (SelectBoxLayer*)layer {
-	return [[[SelectBoxLayer alloc] init] autorelease];
+	return [[SelectBoxLayer alloc] init];
 }
 
 @end
diff --git a/tikzit/src/osx/SelectableNodeView.h b/tikzit/src/osx/SelectableNodeView.h
index be7d1a1..6b0841d 100644
--- a/tikzit/src/osx/SelectableNodeView.h
+++ b/tikzit/src/osx/SelectableNodeView.h
@@ -32,7 +32,7 @@
 }
 
 @property (assign) BOOL selected;
-@property (retain) NodeStyle *nodeStyle;
+@property (strong) NodeStyle *nodeStyle;
 
 
 @end
diff --git a/tikzit/src/osx/SelectableNodeView.m b/tikzit/src/osx/SelectableNodeView.m
index 6fdd283..797a137 100644
--- a/tikzit/src/osx/SelectableNodeView.m
+++ b/tikzit/src/osx/SelectableNodeView.m
@@ -30,7 +30,7 @@
 @synthesize selected;
 
 - (id)initWithFrame:(NSRect)frameRect {
-	[super initWithFrame:frameRect];
+	if (!(self = [super initWithFrame:frameRect])) return nil;
 	nodeLayer = nil;
 	return self;
 }
diff --git a/tikzit/src/osx/StylePaletteController.h b/tikzit/src/osx/StylePaletteController.h
index ed30b58..05f0684 100644
--- a/tikzit/src/osx/StylePaletteController.h
+++ b/tikzit/src/osx/StylePaletteController.h
@@ -43,11 +43,11 @@
     NSString *displayedEdgeStyleCategory;
 }
 
-@property (readonly) NSMutableArray *nodeStyles;
-@property (readonly) NSMutableArray *edgeStyles;
+@property (strong) NSMutableArray *nodeStyles;
+@property (strong) NSMutableArray *edgeStyles;
 @property (readonly) BOOL documentActive;
-@property (assign) NodeStyle *activeNodeStyle;
-@property (assign) EdgeStyle *activeEdgeStyle;
+@property (strong) NodeStyle *activeNodeStyle;
+@property (strong) EdgeStyle *activeEdgeStyle;
 @property (copy) NSString *displayedNodeStyleCategory;
 @property (copy) NSString *displayedEdgeStyleCategory;
 @property (readonly) NSPredicate *displayedNodeStylePredicate;
diff --git a/tikzit/src/osx/StylePaletteController.m b/tikzit/src/osx/StylePaletteController.m
index 8f87bd9..4fe46be 100644
--- a/tikzit/src/osx/StylePaletteController.m
+++ b/tikzit/src/osx/StylePaletteController.m
@@ -50,7 +50,12 @@
         if (nodeStyles == nil) nodeStyles = [NSMutableArray array];
 		if (edgeStyles == nil) edgeStyles = [NSMutableArray array];
         
-		[[self window] setLevel:NSNormalWindowLevel];
+        if ([[NSUserDefaults standardUserDefaults] boolForKey:@"net.sourceforge.tikzit.inspectorsontop"] == YES) {
+            [[self window] setLevel:NSFloatingWindowLevel];
+        } else {
+            [[self window] setLevel:NSNormalWindowLevel];
+        }
+        
 		[self showWindow:self];
 	}
 	
diff --git a/tikzit/src/osx/TikzDocument.h b/tikzit/src/osx/TikzDocument.h
index d817b2e..1881994 100644
--- a/tikzit/src/osx/TikzDocument.h
+++ b/tikzit/src/osx/TikzDocument.h
@@ -32,6 +32,6 @@
 }
 
 @property (readonly) NSString *tikz;
-@property (readonly) GraphicsView *graphicsView;
+@property (weak, readonly) GraphicsView *graphicsView;
 
 @end
diff --git a/tikzit/src/osx/TikzFormatter.m b/tikzit/src/osx/TikzFormatter.m
index 8972706..cb0865d 100644
--- a/tikzit/src/osx/TikzFormatter.m
+++ b/tikzit/src/osx/TikzFormatter.m
@@ -50,6 +50,10 @@
     NSRange addedRange;
     NSString *addedString;
     
+    if(![[NSUserDefaults standardUserDefaults] boolForKey:@"net.sourceforge.tikzit.autocomplete"]){
+        return YES;
+    }
+    
     addedRange = NSMakeRange(origSelRange.location, proposedSelRangePtr->location - origSelRange.location);
     addedString = [*partialStringPtr substringWithRange: addedRange];
     
@@ -76,10 +80,6 @@
             }
         }
         
-        [cs autorelease];
-        [scanner autorelease];
-        [strippedString autorelease];
-        
         if([strippedString length] % 2 == 1){
             return NO;
         }
diff --git a/tikzit/src/osx/TikzSourceController.h b/tikzit/src/osx/TikzSourceController.h
index 3408d9f..84d36da 100644
--- a/tikzit/src/osx/TikzSourceController.h
+++ b/tikzit/src/osx/TikzSourceController.h
@@ -27,17 +27,17 @@
 #import "ParseErrorView.h"
 
 @interface TikzSourceController : NSObject {
-	GraphicsView *graphicsView;
-	NSTextView *sourceView;
+	GraphicsView *__weak graphicsView;
+	NSTextView *__unsafe_unretained sourceView;
 	NSAttributedString *source;
-	NSTextField *status;
+	NSTextField *__weak status;
 	NSDictionary *textAttrs;
 	NSColor *successColor;
 	NSColor *failedColor;
-	NSTextField *errorMessage;
-	ParseErrorView *errorNotification;
+	NSTextField *__weak errorMessage;
+	ParseErrorView *__weak errorNotification;
     
-	NSUndoManager *documentUndoManager;
+	NSUndoManager *__weak documentUndoManager;
 	
 	BOOL tikzChanged;
 	BOOL justUndid;
@@ -46,14 +46,14 @@
 }
 
 @property BOOL tikzChanged;
-@property IBOutlet GraphicsView *graphicsView;
-@property IBOutlet NSTextView *sourceView;
-@property IBOutlet NSTextField *status;
-@property NSUndoManager *documentUndoManager;
+@property (weak) IBOutlet GraphicsView *graphicsView;
+@property (unsafe_unretained) IBOutlet NSTextView *sourceView;
+@property (weak) IBOutlet NSTextField *status;
+@property (weak) NSUndoManager *documentUndoManager;
 @property (copy) NSAttributedString *source;
 @property (copy) NSString *tikz;
-@property IBOutlet ParseErrorView *errorNotification;
-@property IBOutlet NSTextField *errorMessage;
+@property (weak) IBOutlet ParseErrorView *errorNotification;
+@property (weak) IBOutlet NSTextField *errorMessage;
 
 - (void)updateTikzFromGraph;
 - (void)graphChanged:(NSNotification*)n;
diff --git a/tikzit/src/osx/TikzSourceController.m b/tikzit/src/osx/TikzSourceController.m
index 737d771..84eb3a5 100644
--- a/tikzit/src/osx/TikzSourceController.m
+++ b/tikzit/src/osx/TikzSourceController.m
@@ -142,8 +142,12 @@
 }
 
 - (BOOL)tryParseTikz {
+    NSError *thisError;
+    
     Graph *g = [TikzGraphAssembler parseTikz:[self tikz]
-                                       error:&lastError];
+                                       error:&thisError];
+    
+    lastError = thisError;
     
     if (g) {
         [graphicsView deselectAll:self];
@@ -230,9 +234,8 @@
 	}
 }
 
-- (void)finalize {
+- (void)dealloc {
 	[[NSNotificationCenter defaultCenter] removeObserver:self];
-	[super finalize];
 }
 
 @end
diff --git a/tikzit/src/osx/TikzWindowController.h b/tikzit/src/osx/TikzWindowController.h
index e35b7eb..eab427c 100644
--- a/tikzit/src/osx/TikzWindowController.h
+++ b/tikzit/src/osx/TikzWindowController.h
@@ -11,13 +11,13 @@
 @class TikzDocument, GraphicsView, TikzSourceController;
 
 @interface TikzWindowController : NSWindowController {
-	GraphicsView *graphicsView;
-	TikzSourceController *tikzSourceController;
+	GraphicsView *__weak graphicsView;
+	TikzSourceController *__weak tikzSourceController;
 	TikzDocument *document;
 }
 
-@property IBOutlet GraphicsView *graphicsView;
-@property IBOutlet TikzSourceController *tikzSourceController;
+@property (weak) IBOutlet GraphicsView *graphicsView;
+@property (weak) IBOutlet TikzSourceController *tikzSourceController;
 
 - (id)initWithDocument:(TikzDocument*)doc;
 
diff --git a/tikzit/src/osx/TikzWindowController.m b/tikzit/src/osx/TikzWindowController.m
index 2e672d2..bfacbfb 100644
--- a/tikzit/src/osx/TikzWindowController.m
+++ b/tikzit/src/osx/TikzWindowController.m
@@ -16,7 +16,7 @@
 @synthesize graphicsView, tikzSourceController;
 
 - (id)initWithDocument:(TikzDocument*)doc {
-	[super initWithWindowNibName:@"TikzDocument"];
+	if (!(self = [super initWithWindowNibName:@"TikzDocument"])) return nil;
 	document = doc;
 	return self;
 }
diff --git a/tikzit/src/osx/ToolPaletteController.h b/tikzit/src/osx/ToolPaletteController.h
index e45c08d..6301c6b 100644
--- a/tikzit/src/osx/ToolPaletteController.h
+++ b/tikzit/src/osx/ToolPaletteController.h
@@ -30,13 +30,13 @@ typedef enum {
 } TikzTool;
 
 @interface ToolPaletteController : NSObject {
-	NSPanel *toolPalette;
-	NSMatrix *toolMatrix;
+	NSPanel *__weak toolPalette;
+	NSMatrix *__weak toolMatrix;
 }
 
 @property TikzTool selectedTool;
-@property IBOutlet NSPanel *toolPalette;
-@property IBOutlet NSMatrix *toolMatrix;
+@property (weak) IBOutlet NSPanel *toolPalette;
+@property (weak) IBOutlet NSMatrix *toolMatrix;
 
 
 @end
author	Aleks Kissinger <aleks0@gmail.com>	2017-01-02 11:31:52 +0100
committer	Aleks Kissinger <aleks0@gmail.com>	2017-01-02 11:31:52 +0100
commit	ff79a9c213dfd75ea00ed5112d3a6e314601e064 (patch)
tree	19ecef47bf11803fc4fc59e06c185c65aa7fdd19 /tikzit
parent	9e4f8a6ff37161da4fa0af14604ad22d9c212fde (diff)
parent	49c0d2041f0aae6d08d325b7f7fc1cd707d942f8 (diff)