The build rule updates, if necessary, the document's easily reproducible result files. The implementation of the build rule is similar to the implementation of the burn rule:
build: buildER
buildER: ${addsuffix .build, ${RESULTSER}}
buildCR: ${addsuffix .build, ${RESULTSCR}}
%.build: ${RESDIR}/%.ps
At our laboratory, almost every result file is a figure that exists in postscript format. Consequently the ReDoc %.build rule updates the postscript version of any easily reproducible result, such as ${RESDIR}/frog.ps. Additional versions of the result (e.g. frog.gif) are usually generated as a side effect of the rule that computes the postscript version (frog.ps).
As in the case of dot.burn, the nonstandard text result dot (since it is not a figure) requires the author to supply an explicit dot.build rule.