</td><td>
  Returns <code>true</code> if <code>Elem</code> matches some element of <code>Iterator</code>,
  otherwise <code>false</code>.</td></tr>
<tr><td valign="top"><a href="#merge-1">merge/1</a></td><td>
  Returns the sorted iterator formed by merging all the subiterators
  of <code>IteratorOfIterators</code>.</td></tr>
<tr><td valign="top"><a href="#merge-2">merge/2</a></td><td>
  Returns the sorted iterator formed by merging <code>Iterator1</code> and
  <code>Iterator2</code>.</td></tr>
<tr><td valig