First step is , you must have converter.exe.
This converter.exe tranform graph.lex into (graph.lispm, graph.lsp...).
(Input file graph.lex)
(OutPut file graph.lispm, graph.lsp and graph.debug))
(if (you_are "autolisp-developer")
(then (+ you us) (can_(work togheter at your-project)))
).
(thank you (if contact_us (yousee "readme.txt") (from .zip)))