/PRE>
<h4><a name="Keywords">Keywords</a></h4>
<PRE>
 
   WINDOWS 
 

</PRE>
<h4><a name="Brief_I/O">Brief_I/O</a></h4>
<PRE>
 
   VARIABLE  I/O  DESCRIPTION 
   --------  ---  -------------------------------------------------- 
   left, 
   right      I   Left, right endpoints of new interval. 
   window    I,O  Input, output window. 
 </PRE>
<h4><a name="Detailed_Input">Detailed_Input</a></h4>
<PRE>
 
   left, 
   right       are the left and right endpoints of the interval 
               to be inserted.