What do “branch”, “tag” and “trunk” mean in Subversion repositories?

Question

I\'ve seen these words a lot around Subversion (and I guess general repository) discussions.
I have been using SVN for my projects for the last few year

Answer 1

In addition to what Nick has said you can find out more at Streamed Lines: Branching Patterns for Parallel Software Development

In this figure main is the trunk, rel1-maint is a branch and 1.0 is a tag.