CONTUR

     CONTUR sets attributes for the contour algorithms:

		subbox factor / number of smoothing passes 

     Each grid box will be subdivided into the number of subboxes
     specified by the subbox factor.  Increasing this value will
     produce smoother contours, but will increase contouring times 
     and make metafiles larger.  The new default value in GEMPAK 5.2 
     is 0.

     A simple three-point smoothing filter is used if the number 
     of smoothing passes is greater than 0.  The default is 0.