 optional <code>&lt;rest&gt;</code> is ignored so that
the command can read the input given to the <code>post-rewrite</code> hook.)</p>
</div>
</dd>
<dt class="hdlist1">append</dt>
<dd>
<p>Append new message(s) given by <code>-m</code> or <code>-F</code> options to an
existing note, or add them as a new note if one does not
exist, for the object (defaults to HEAD).  When appending to
an existing note, a blank line is added before each new
message as an inter-paragraph separator.  The separator can
be custom