1. Runoff preprocessor for program sources Vgrind formats the program sources which are arguments in a nice style using groff(1). Comments are placed in italics, keywords in bold face, and the name of the current function is listed down the margin of each page as it is encountered. Vgrind runs in two basic modes, filter mode (see the -f option) or regu- lar mode. In filter mode vgrind acts as a filter in a manner similar to tbl(1). From Debian 3.0r0 APT