call this method
 to run the iterator to the index.  By default this sets
 m_next to the index.  If the index argument is -1, this
 signals that the iterator should be run to the end.<DD><DL>
<DT><B>Specified by: </B><DD><A HREF="../../../org/apache/xpath/axes/ContextNodeList.html#runTo(int)">runTo</A> in interface <A HREF="../../../org/apache/xpath/axes/ContextNodeList.html">ContextNodeList</A><DT><B>Parameters:</B><DD><CODE>index</CODE> - Position to advance (or retreat) to, with
 0 requesting the reset (