It was an intro programming class, so I don’t think they were up for it. Actually, that might be a pretty good project for the class, haha.

I’m not very familiar with the details of the zip format, just uncompressed/compress when I need to modify a zip. But, if you want to modify a file inside a zip, there will be some bookkeeping, right? I guess it would at least be necessary to make sure the modified file doesn’t start to overlap the entry after it…