title: SVN folder (not repository-wide) permissions
body: <p>I am a bit new to SVNed code.</p>
  
  <p>We are a small team (4 people) divided into two duos.<br>
  Each of the duos has its own disjoint share of the project.<br>
  I want to be able to SVN a project to a single repository with the following:<br></p>
  
  <ul>
  <li>each duo, should be able to <strong>write to it's own</strong> "section" of the rep'.</li>
  <li>each duo, should be able to <strong><em>read-only</em> the other</strong> duo's section.</li>
  </ul>
  
  <p>Can this be done on a single repository?<br>
  Are there folder-specific, rather than repository-wide permissions?
  Is this hosting/repository service dependent? I am currently hosted at XP-Dev.</p>
  
  <p>Would appreciate any kind of comment or reference.
  David</p>