Listing multiple repositories
I could have sworn Subversion < 1.3 could do this before but apparently it is new in 1.3. To list all the repositories served by apache you need to add the SVNListParentPath directive:
# Subversion <Location "/svn"> DAV svn SVNParentPath /svn SVNListParentPath On SVNIndexXSLT "/svnindex.xsl" </Location>