title: Determining changelist number for unshelve
body: <p>I temporarily shelved my current changelist in order to work on something else.  When I went back to it, I had to scroll through hundreds of lines in my terminal to determine the changelist number.  Is there another way to get this number?  </p>
  
  <p>In Git, you can use <code>git stash</code> to save an arbitrary number of changesets.  when you <code>pop</code> a stash, you can specify which stash to pop.  Similar functionality is also available in Mercurial.  I use Mercurial Queues (<code>mq</code>) because I am familiar with them but there are a number of ways to do this in Mercurial.</p>
  
  <p>Is similar functionality available in Perforce?  Are these changelist numbers stored anywhere or do I have to remember them?  I am using the command line (not P4V).</p>