Trying to understand SVN (trunk, tags, versioning)

Hey all –

I created a plugin a couple of months ago, added to trunk, and all is well. I did not create a tag for that release, and currently the trunk’s readme.txt says:

Stable tag: trunk

What I’d like to do now is tag my first release as 1.0, but I’m pretty confused. Suppose I make a copy of trunk, and put it in a folder named 1.0 within the ‘tags’ directory. The readme.txt stable tag still says ‘trunk’ in the 1.0 version (within the ‘tags’ directory).

Should I change this? Does it even matter? If somebody rolls back to this version, and the stable tag says ‘trunk’, will it detect that there’s a new version that they need to update to?

Moving forward, would it be better for the readme.txt stable tag within trunk to point to the version within the tags directory, or should I keep it pointing to trunk?

SVN has me well-confused ??