| 
	    plhlsrgb
	  ( | h, | 
| l, | |
| s, | |
| p_r, | |
| p_g, | |
| p_b ); | 
Convert HLS color coordinates to RGB.
h
	  (PLFLTHue in degrees (0.0-360.0) on the color cylinder.
l
	  (PLFLTLightness expressed as a fraction (0.0-1.0) of the axis of the color cylinder.
s
	  (PLFLTSaturation expressed as a fraction (0.0-1.0) of the radius of the color cylinder.
p_r
	  (PLFLT_NC_SCALARReturned value of the red intensity (0.0-1.0) of the color.
p_g
	  (PLFLT_NC_SCALARReturned value of the green intensity (0.0-1.0) of the color.
p_b
	  (PLFLT_NC_SCALARReturned value of the blue intensity (0.0-1.0) of the color.
Redacted form:
	    General: plhlsrgb(h, l, s, p_r, p_g, p_b)
	  
This function is used in example 2.