Structure is set in accordance to the following recommendations here in Rahul's blog

IMPORTANT! To anonymously checkout or export use http protocol. Otherwise if you have been granted with commit rights use https protocol to authorized export, checkout, switch, commit, other repository operations.

The root of the repository is http://rainbow.googlecode.com/svn/* (https://rainbow.googlecode.com/svn/*) Do not checkout or export this url directly, you have to add a relative path to a structure unit for best result. Please remember that the relative paths are case sensitive.

WARNING! There is no http://rainbow.googlecode.com/svn/trunk/~~ as it shown at standard Google Code page of the Rainbow project

We use our own structure instead of initially precreated structure. It is described below more detailed. You can browse this structure by TortoiseSvn Repo-browser (see http://tortoisesvn.tigris.org/). You who has rights to commit please follow this structure and never make commits outside your sandbox.