We have been building and maintaining our project for 18 months in SVN "/mycompany/m.example.com/trunk". Current revision is @r3881.
Now we want to re-design. This includes directory structures, files, code, etc. I was thinking we just want to shove everything that is now 'trunk' into a 'branch' and start with a clean slate in 'trunk'. Everyone will re-checkout and we will re-export on the production server too. We are only 3 developers, so impact is minimal whatever we decide. [a] is this advisable? if not, what is the proper way to do this? [b] what would be the SVN commands to accomplish this? [c] we've never done any branching or tagging before. We simply use SVN for the very basics to commit, revert, archive/backup, export/checkout, etc... We're running Subversion 1.6.16 if that matters.