[Pharo-project] how to save a package in a repository

Hi all I have a working copy of a package and I would like to be able to save it into another repository. Does any of you know how to do that? I found repo storeVersion: (but I do not know how to get a version from a working copy). May be with an UML diagram I could find my way, but so far after 25 min nothing besides trying in the dark I'm really sad that there is not a single comment on MC. This is exactly what pharo should pay attention to: documentation, simple design, ... stef