FHist1.17

The FHist program contains 3 utilities, a file history tool ``fhist'', a file comparison tool ``fcomp'', and a file merging tool ``fmerge''. All three are bundled together, because they all use the same minimal-difference algorithm. The history tool presented here, fhist, is a minimal history tool. It provides no locking or branching. This can be useful in contexts where the configuration management or change control be being provided by some other tool.