Frequently Asked Question List for TeX
PicTeX is a set of macros by Michael Wichura for drawing diagrams and pictures. The macros have been freely available since the 1980s. Since June 2020 the Manual is also available on CTAN.
There is also a summary of PicTeX commands available on CTAN, which is a great aide-memoire for those who basically know the package to start with.
FAQ ID: Q-docpictex