| 
	    pl_setcontlabelparam
	  ( | offset, | 
| size, | |
| spacing, | |
| active ); | 
      Set parameters of
      contour labelling other than those handled by pl_setcontlabelformat.
    
offset
	  (PLFLTOffset of label from contour line (if set to 0.0, labels are printed on the lines). Default value is 0.006.
size
	  (PLFLTFont height for contour labels (normalized). Default value is 0.3.
spacing
	  (PLFLTSpacing parameter for contour labels. Default value is 0.1.
active
	  (PLINTActivate labels. Set to 1 if you want contour labels on. Default is off (0).
      Redacted form: pl_setcontlabelparam(offset, size, spacing, active)
    
This function is used in example 9.