lete-3">keydelete/3</a></td><td>
  Returns a copy of <code>TupleIterator1</code> where the first occurrence of a tuple
  whose <code>N</code>th element compares equal to <code>Key</code> is deleted, if there is
  such a tuple.</td></tr>
<tr><td valign="top"><a href="#keyfind-3">keyfind/3</a></td><td>
  Searches the iterator of tuples <code>TupleIterator</code> for a tuple whose
  <code>N</code>th element compares equal to <code>Key</code>.</td></tr>
<tr><td valign="top"><a href="#keymap-3">keymap/3</a></td>