The xypdf package
Daniel Müllner · 2013
The xypdf package improves the output quality of the XY-pic package when PDF documents are generated. It produces generic PDF code for graphical elements like lines, curves and circles instead of approximating these elements with glyphs in special fonts as the original XY-pic package does. The xypdf package works with both TEX and LATEX in the occurrences of pdfTEX, X E TEX and e-TEX with dvipdfm(x) to generate PDF files. xypdf is being integrated and distributed together withXY-pic, starting with XY-pic version 3.8.