| 
            plscmap0n
          ( | ncol0 ); | 
      Set number of colors in cmap0 (see the section called “Color Map0”). Allocate (or reallocate) cmap0, and fill
      with default values for those colors not previously allocated.  The
      first 16 default colors are given in the plcol0 documentation.  For
      larger indices the default color is red.
    
The drivers are not guaranteed to support more than 16 colors.
      Redacted form: plscmap0n(ncol0)
    
This function is used in examples 15, 16, and 24.