This is a part of the [struct] module in the [tcllib] distribution.
     
The doc for this command will joyfully be found at
http://tcllib.sourceforge.net/doc/graph.html

Use this to create and manipulate directed graph objects.

[[anyone have examples of when to use this?]]

The companion package [struct::graphop] provides a number of graph algorithms.

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%| [category data structure] | [category tcllib] | [category package]|[Category Graph theory] |%