> I'm not sure if you are overcomplicating this by trying to use Unix > permission. Have you instead considered webdav? You can restrict this to > particular (apache) users/groups, directories, files. It also uses lockfiles > so with two users editing a file simultaneously will cause a warning when you > try to save it.
How does webdav relate to something like subversion? Do they compliment each other or are they substitutes? - Grant