changes into your package using <code>fcm
    merge</code>. Note, however, that if you have a branch which is being used
    in a package then you should avoid merging changes from the trunk into your
    branch. If you do then it will be very difficult to get updates to your
    branch merged into the package.</li>
  </ul>

  <p>The <code>fcm branch --info</code> command is very useful for maintaining
  packages. It tells you all of the branches which have been merged into your
  package and whether there 