dd>
<dt class="hdlist1"><em>&lt;rev&gt;^[&lt;n&gt;]</em>, e.g. <em>HEAD^, v1.5.1^0</em></dt>
<dd>
<p>A suffix <em>^</em> to a revision parameter means the first parent of
that commit object.  <em>^&lt;n&gt;</em> means the &lt;n&gt;th parent (i.e.
<em>&lt;rev&gt;^</em>
is equivalent to <em>&lt;rev&gt;^1</em>).  As a special rule,
<em>&lt;rev&gt;^0</em> means the commit itself and is used when <em>&lt;rev&gt;</em> is the
object name of a tag object that refers to a commit object.</p>
</dd>
<dt class="hdlist1"