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 BLACK&WHITE
 =========== 

 4/16/86 EFH    Made PUSH-TRANSFORM allocate new transforms as needed
 4/17/86 EFH    Removed round in polygons
 4/24/86 EFH    Fixed viewport clipping for 2d lines
 4/25/86 EFH    ORTHO2 and recover transforms in init-b&w
 4/25/86 EFH    Made SET-TEXT-POS map coords
 4/28/86 EFH    Typos in init-b&w
 5/05/86 PECANN Cursor stuff
 5/13/86 PW     Made mouse work with viewport
 5/20/86 EFH    fixed typos in transform-point...
 5/19/86 PW	   transform-point		
 5/19/86 PW	   reverse-transform-point	
 5/22/86 PW	   point			
 5/22/86 PW	   read-point			
 5/23/86 PW	   fix viewport & border bug
 5/28/86 PECANN changed relative polygons to reflect changes in MAKE-POLYGON
 5/28/86 EFH    added fill-mode and started FILL-POLYGON
 5/29/86 EFH    fixed map-3d-point (wasn't dividing by w, or checking z clip)
 5/30/86 PW     rewrote map-clip-&-draw-3d-line
 5/30/86 EFH    default fill-mode is :solid, removed curve vars, hacked 3d-line
 6/06/86 EFH    made circle and fill-circle scale radius
 6/11/86 PECANN made viewport stuff use viewport structs.
 6/24/86 RDM    conditionalization for medium-res until defvice inheritance works
                   Note that these changes can be removed by deleting all lines
                   with ;*** after them, then checking for all lines with ;*!* ,
                   decommenting them, and doing the substitution indicated

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