Multiple SVN repositories and one Work dir? [SOLVED]

[eluser]m4rw3r[/eluser]
Is it possible to link a single working directory to many SNV repositories?
Or maybe specific files?

I have one repository for backup, and one for IgnitedRecord (planning to get one for MPTtree as well). And sometimes I want to sync everything to backup (when I've made some progress on something in my work dir) and then when I'm finished with a feature I want to sync it with the other repository.

Is this possible? (I have my doubts but I think it wouldn't hurt to ask)

Or if you have multiple projects how do you store them?
I especially wonder about those times when a big app includes some other smaller projects which also needs separate SVN.

[eluser]m4rw3r[/eluser]
Ok, i found a solution on how to separate them and yet use them together: svn:externals

Two links that might help others with the same problem (or use a nice way to have CI updated in the project dir):
http://weierophinney.net/matthew/archive...rnals.html
http://claudio.cicali.org/article/71/svn...icro-howto