"./images/arrow_right.gif">
        <code class="varname">
          <a href="javascript:void(0)"
             onclick="toggleHelp('datamode')">datamode</a>
        </code>
        <div id="datamode_help" style="display: none;
             padding-left: 16px; margin-top: 4px; border-top: 1px dashed
             #cccccc;">
	     <pre>
valid values: NULL,CPLHIST,DIATREN_ANN_RX1,DIATREN_IAF_RX1
The runoff data is associated with the runoff model 
and is normally on a different grid than the land data.  
In the