title: Mercurial - use hg log to view all descendants
body: <p>To view all ancestors of a changeset <a href="https://stackoverflow.com/questions/4797840/mercurial-use-hg-log-to-view-all-ancestors/4798003#4798003">you can use</a> <code>hg log -r :xyz</code>.  How can you view all descendants of a changeset?</p>