  <dd>
      <p>The log message should name every modified file and explain why it was
      changed. Make sure that the log message includes some sort of description
      for every change. The value of the log becomes much less if developers
      cannot rely on its completeness. Even if you've only changed comments,
      note this in the message. For example:</p>
      <pre>
 * working_practices.html:
   Added guidelines for writing log messages.
</pre>

      <p>If you make exactly the same change in s