 to draw the first
five contours in color index 2 (red) and the remaining 5 in color index 3 
(green):
<PRE> 
      CALL PGSCI(2)
      CALL PGCONT(F,50,50,1,50,1,50,ALEV,5,TR)
      CALL PGSCI(3)
      CALL PGCONT(F,50,50,1,50,1,50,ALEV(6),5,TR)
</PRE>
Normally <CODE>PGCONT</CODE> is preferable to <CODE>PGCONS</CODE>.  See the description in
Appendix A for suggestions as to when <CODE>PGCONS</CODE> should be used.</P>


<DIV class=NOPRINT>
<HR>
Next: <A HREF="chapter6b.html">Images</A>
<HR>
<A HREF="../ind