<p>
  Returns the sorted iterator formed by merging all the subiterators
  of <code>IteratorOfIterators</code>. All subiterators must be sorted before
  evaluating this function. When two elements compare equal, the
  element from the subiterator with the lowest position in
  <code>IteratorOfIterators</code> is picked before the other element.</p>
 
  The first element of each subiterator will be evaluated.</p>

<h3 class="function"><a name="merge-2">merge/2</a></h3>
<div class="spec">
<p><tt>merge(Iterator