aster.</li>

        <li>Your working copies use up less disk space. Remember that you may
        be working on several changes at once on separate branches so you may
        wish to have several working copies.</li>
      </ul>

      <p><dfn>Cons:</dfn></p>

      <ul>
        <li>You cannot always perform merge operations in sub-trees (if the
        changes which need to be merged include files outside of your
        sub-tree). To handle this we suggest that if you need to perform a
        merge usi