1 /PAGE
/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.
2 /PRINTER_TYPE
/PRINTER_TYPE=keyword /PRINTER_TYPE is used to specify the printer type. The default PRINTER_TYPE is FILE. This produces a plain-text output file with all terminal-control sequences removed. PRINTER_TYPEs available differ for AXP and VAX. for details, see the PEEK Commands FORMAT Subtopics: AXP-Only and VAX-Only.
3 /SCREEN_SIZE
/SCREEN_SIZE = page_length Synonymous for /PAGE. See PEEK Commands FORMAT Subtopic: /PAGE.