pl_setcontlabelformat: Set
    format of numerical label for contours
      
| 
	    pl_setcontlabelformat
	  ( | lexp, | 
|  | sigdig ); | 
 
    
      Set format of numerical label for contours.
    
- 
	  lexp(PLINT
- 
	    If the contour numerical label is greater than 10^(lexp) or less
	    than 10^(-lexp), then the
	    exponential format is used.  Default value of lexp is 4.
	   
- 
	  sigdig(PLINT
- 
	    Number of significant digits.  Default value is 2.
	   
      Redacted form: pl_setcontlabelformat(lexp, sigdig)
    
      This function is used example 9.