.PAGE_SIZE

   The .PAGE SIZE command sets the page "frame" by specifying the
   page length (the maximum number of lines of text on a page)
   and the page width for the running heads. (Compare with .RIGHT
   MARGIN, which sets the text width.) The width component of .PAGE
   SIZE and the value established by .RIGHT MARGIN are separate
   values.

   Format

     .PAGE SIZE  [[+/-]n1] [,[+/-]n2]

   Abreviated format

     .PS  [[+/-]n1] [,[+/-]n2]
 

Additional information available:

Parameters      Default