Commensurate axis scaling

If the \COMMENSURATE qualifier is used, the axes will be drawn with commensurate scaling, that is, the lengths of both axes will be adjusted to give a commensurate graph. The lengths of the axes are adjusted at the time the SCALES\COMMENSURATE command is given, which means that if you change windows, with the WINDOW command, after the SCALES\COMMENSURATE command, the axis lengths will be incorrect. Choose the window you want and then set the axis scales.

  SCALES command
  Labeled tic marks