We are continuing to work with Richard Stallman to adapt GNU make even more to the needs of electronic document maintenance. We appreciate his advice and his implementation of the special built-in target .SECONDARY. Martin Karrenbach implemented a TEX macro which extracts the reproducibility information (ER,CR,NR) from the makefile and indicates it in each figure caption. Steve Cole and Dave Nichols implemented a mechanism variable in their xtpanel.builder which made it a breeze to use GNU make in the standard xtpanel document interface. We thank Mihai Popovici for his courage in testing an early version of the GNU make SEP rules in his thesis. Finally, we want to acknowledge the pioneering work of Jon Claerbout, Martin Karrenbach, Dave Nichols, and Steve Cole which made this research project almost a pure translation from SEP's original cake rules.