 an
object that exists, without requiring <em>rev</em> to be a tag, and
without dereferencing <em>rev</em>; because a tag is already an object,
it does not have to be dereferenced even once to get to an object.</p>
</div>
<div class="paragraph">
<p><em>rev^{tag}</em> can be used to ensure that <em>rev</em> identifies an
existing tag object.</p>
</div>
</dd>
<dt class="hdlist1"><em>&lt;rev&gt;^\{\}</em>, e.g. <em>v0.99.8^\{\}</em></dt>
<dd>
<p>A suffix <em>^</em> followed by an empty brace pair
