/PAGE = page_length

   Specify the height of the screen. This value is used to determine
   where to insert form feeds in the output file.

   The default value if /PAGE is not specified is 24 lines.

   If /PAGE is specified without a value, the value defaults to the
   length of the current terminal.

   This qualfier should be specified if you are using a 36 or 48 line
   screen on a VT420 or other terminal.