- testing, which will usually require files to be edited, and possibly moved
- adding new things, which involves creating new files
- improving, fixing mistakes and adding options, memos and notes to make the recipes easier to follow, potentially for other people, since I often share them (I guess that's one reason it might be useful to have a public repository, though before creating one, if I do that, I think I should check that I've properly attributed the recipes I've copied or only slightly adapted from other sources)