SET(SCREEN_LIMITS)

  Specifies the minimum and maximum allowable sizes for the screen during
  resize operations.  TPU passes these limits to the DECwindows window
  manager, which is free to use or ignore the limits.

  Syntax

     SET (SCREEN_LIMITS, array)

  Parameters

     array An integer-indexed array specifying hints for the minimum and
           maximum screen width and length.  For Motif DECwindows, the
           second pair of elements is optional.

  Usage notes

      The array elements specify the following:

         1.  The minimum screen width, in columns.  Must be at least 0, and
             less than or equal to the maximum screen width.  Default value
             is 0.

         2.  The minimum screen length, in lines.  Must be at least 0, and
             less than or equal to the maximum screen length.  Default value
             is 0.

         3.  The maximum screen width, in columns.  Must greater than or
             equal to the minimum screen width, and less than or equal to
             255.  Default value is 255.  This element is optional for Motif
             DECwindows, but if present, must be accompanied by element
             four.  Not specifying element three and four allow the Motif
             window manager to make the TPU window fill the screen when
             the user presses the maximize button.

         4.  The maximum screen length, in lines.  Must greater than or
             equal to the minimum screen length, and less than or equal to
             255.  Default value is 255.  This element is optional for Motif
             DECwindows.