HP-GL/2 and HP RTL reference guide : a handbook for program developers 
Hewlett-Packard 
 - 3rd ed 
 - Reading, Mass.  Addison-Wesley  1997 
 - xviii, 516 p.  ill.  24 cm 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0201310147 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer graphics.<br/>HP-GL/2 (Computer program language)<br/>RTL (Computer program language)