The pushbutton is the interface between the word-processing program and the command scripts. The label on the pushbutton holds the pathname to the command script and the name of the figure. What happens next is determined by the conventions and style of the author. Somewhat more than half the illustrations are reproducible. There are 165 captions with pushbuttons and 81 without.
Nonreproducible illustrations are mostly line drawings from a draw program.
Other nonreproducible illustrations used our parallel computer or had been done at other sites. Most of the pushbuttons simply rebuild and replot as described below, but many increasingly show movies. Cake UNIX systems use something called a makefile to maintain software. The remainder of this paragraph explains the makefile concept for those unfamiliar with it. To get these final results, many source files are needed such as data, main programs, subroutines, and parameter files.