Graphlib is a generic library that extends a well known OCamlGraphlibrary. Graphlib uses its own, more reach, Graph interface thatis isomorphic to OCamlGraph'sSigs.P signature for persistantgraphs. Two functors witness the isomorphism of the interfaces:Graphlib.To_ocamlgraph andGraphlib.Of_ocamlgraph. Thanks tothese functors, any algorithm written for OCamlGraph can be used onGraphlibs graph and vice verse.