Lotus HAL :  user's manual. 

 - [N.p.] :  [N.p.],  1986. 
 - Various paging. 
<br/><br/><label>LCCN: </label>91016185     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lotus HAL (Computer program)--Handbooks, manuals, etc.<br/>Computer programs--Handbooks, manuals, etc.