Basefile/extracted file interaction

You'll have to scope the extract page for any kind of real feel for how this works, but some atlas-specific details are in order here. In each subdirectory of the ATLAS/ tree, you will find a file Make.ext. If you type make -f Make.ext, this makefile will extract all new files in this subdirectory for which the basefile is newer.

So, what usually happens is you a messing with something, and you do it in the ATLAS/ directory. When you are confident in your change, you put it into the appropriate basefile in the AtlasBase/ directory (note that examining Make.ext will show you what basefile a given extracted file comes from), and you then re-extract over your working copy with the above command.