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+# Bottleneck_distance #
+
+## `bottleneck_read_file_example` ##
+This program computes the Bottleneck distance between two persistence diagram files.
+
+Usage:
+`bottleneck_read_file_example <file_1.pers> <file_2.pers> [<tolerance>]`
+where
+`<file_1.pers>` and `<file_2.pers>` must be in the format described [here](http://gudhi.gforge.inria.fr/doc/latest/fileformats.html#FileFormatsPers).
+`<tolerance>` is an error bound on the bottleneck distance (set by default to the smallest positive double value).