feynmf – Macros and fonts for cre­at­ing Feyn­man (and other) di­a­grams

The feynmf pack­age pro­vides an in­ter­face to Meta­font (in­spired by the fa­cil­i­ties of mf­pic) to use sim­ple struc­ture spec­i­fi­ca­tions to pro­duce rel­a­tively com­plex di­a­grams. (The feynmp pack­age, also part of this bun­dle, uses Meta­Post in the same way.)
While the pack­age was de­signed for Feyn­man di­a­grams, it could in prin­ci­ple be used for di­a­grams in graph and sim­i­lar the­o­ries, where the struc­ture is semi-al­go­rith­mi­cally de­ter­mined.