diagxy – Diagram macros by Michael Barr

Di­agxy is a gen­eral di­a­gram­ming pack­age, use­ful for di­a­grams in a num­ber of math­e­mat­i­cal dis­ci­plines.
Di­agxy is a de­vel­op­ment of an ear­lier (suc­cess­ful) pack­age to use the fa­cil­i­ties of the xypic bun­dle.