How are tags made in Subversion?

Question

I know how to use tags in subversion. I create a tag every time I get to a release milestone.

What I don\'t quite understand is how they work.

Is a tag just a c

Answer 1

Yes, a svn copy (whether you are thinking of it as a tag, a branch, or copying a file in trunk) is all the same. SVN will internally create a pointer to the source location at that revision. If you then make changes to the copy (which you are likely to do if it is a branch or a copied file in trunk, but shouldn't do for tags), SVN will only store what was changed, rather than creating a whole new copy.