Use the STEP keyword to
 
  ■ indicate how much to increase or decrease the loop counter after
    each iteration of a FOR...NEXT loop.
 
  ■ in graphics statements, to indicate that the pixel coordinates that
    follow STEP are relative offsets from the last location of the
    graphics cursor on the screen, rather than absolute distances
    from the upper left corner of the screen.
 
See Also  ◄FOR...NEXT►  ◄CIRCLE►  ◄LINE►  ◄PAINT►
        ◄PRESET►  ◄PSET►
        ◄GET (Graphics)►  ◄PUT (Graphics)►