\begin{frame}[label=after-basics]{Mercurial is Extensible}
  You can add new functionality to Mercurial:
  \begin{itemize}
  \item ships with 30+ extensions
  \item wiki lists 75+ extensions
  \item extensions can change basically everything
  \item helps to keep the core small and focused
  \end{itemize}

  % \begin{itemize}
  % \item \ext{bugzilla} integrates with Bugzilla
  % \item \ext{color} enables  color output in terminals
  % \item \ext{gpg} manages GnuPG digital signatures
  % \item \ext{inotify} gives instant file status on Linux 2.6
  % \item \ext{keyword} expands keywords in working copy
  % \item \ext{parentrevspec} changes syntax for revisions
  % \end{itemize}
\end{frame}