Module headers start with a C and three plus signs, and are terminated with three equal signs. Subroutine names are followed by a blank and an opening bracket, function names are followed directly by the bracket. Probably we stick to several more conventions that were not really designed, but historically grew. With projects the size of WHAT IF one has to stick to many conventions rather rigorously, otherwise after a couple of years it becomes unreadable spaghetti. The output is in postscript format.
Comments are in bold.
Copyright notices are removed. Placeholder comments are in Italics. There are 120 lines per page. Designed for A4 paper, US letter not guaranteed. This seems rather clumsy, but the advantage is that these are very easy to parse flat text files.