Torsten A. wrote:

I have never really used a version control system I have to admit. I thought of control systems to log changes which can in case of severe damage or what ever reason be made undone. But if I can execute different versions of the project, e.g. in my case the initial version and the last modified, just by saying run this one or that one, I am glad to use it. Can this be done (excuse my probably dumb question)? Can someone please give me catchword to search for? As I looked briefly in the bazaar guide (http://doc.bazaar-vcs.org/bzr.dev/en/user-guide/index.html) I wasn't able to find anything helpful.

Thanks again for your help! I really appreciate it!

I use bazaar myself for version control, and I highly recommend it. If you're popping in and out on different branches/versions all the time though, you may want to look at combinator from Divmod. Sounds like just what you're looking for. Here is a link to it, the link isn't working for me at this particular moment, but I know it is a good link, hopefully will be back up sometime today. http://divmod.org/trac/wiki/DivmodCombinator