<graphics, publication> A package for typesetting graphs and
diagrams using TeX. It is structured as several modules,
each defining a custom notation for a particular kind of
graphical object or structure. Example objects are arrows,
curves, and frames. These can be organised in matrix,
directed graph, path, polygon, knot, and 2-cell structure.
Xy-pic works with LaTeX, AMS-LaTeX, AMS-TeX, and plain
TeX, and has been used to typeset complicated diagrams from
many application areas including category theory, automata
theory, algebra, neural networks and database theory.
