This directory contains programs that generate networks and graphs. Most are in the DIMACS format. This Directory Contains: universal.c : A very portable random number generator, as C-language function calls. Read the in-line code. matching/ : A directory of generators for matching problems. net-simple/ : A directory containing some very simple-minded generators, for checking compatiblity with DIMACS format. These generators are not much good for testing code. network/ : A directory containing generators for network problems.