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     The getviewcoord subroutines translate the specified coordinates
     from one coordinate system to view coordinates and return them in
     an xycoord structure (defined in FGRAPH.FD).
 
     The getviewcoord subroutines translate in the following manner:
 
     Function             Translation
 
     getviewcoord         Physical coordinates (<x>, <y>) to view
                          coordinates
 
     getviewcoord_w       Window coordinates (<wx>, <wy>) to view
                          coordinates
 
     See also: ◄Graphic Coordinate Systems►
 
     Return Value
 
     None.
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