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PMAP (expression#, n%)
 
  ■ expression#   Specifies the known x or y coordinate in the window
                  or viewport.
  ■ n%            Specifies the mapping function; an integer expression
                  with a value between 0 and 3:
                      Value  expression              Returns
                        0    Window x coordinate     Viewport x coordinate
                        1    Window y coordinate     Viewport y coordinate
                        2    Viewport x coordinate   Window x coordinate
                        3    Viewport y coordinate   Window y coordinate
Returns
    The equivalent viewport or window coordinate.
 
See Also    ◄WINDOW►    ◄VIEW►    ◄POINT►