situation: you make a bunch of edits to your wc and then realize that your work
will either a) take longer than you expected and/or b) be more complicated than
planned and likely break some stuff initially

<sussman:#svn> the best practice is:
<sussman:#svn> 1. make local mods
<sussman:#svn> 2. "damn, this should be on a branch"
<sussman:#svn> 3. svn cp trunkURL branchURL
<sussman:#svn> 4. svn switch branchURL
<sussman:#svn> 5. svn commit
<holsta:#svn> sussman, I thought branches only contained deltas between the trunk and the branch, hence saving space.
<sussman:#svn> in general, it's just a Bad Idea to create branches via 'svn copy wc URL'