Library /sys$common/syshlp/lse$help.hlb SET_NUMBER_OF_WINDOWS  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  Syntax:  SET NUMBER OF WINDOWS number

  Sets a specific number of windows on the screen.

  This command immediately sets the number of windows on the screen to
  the number that you specify.

  RELATED COMMANDS:

     DELETE WINDOW               SHOW WINDOW ATTRIBUTES
     NEW WINDOW                  TWO WINDOWS
     ONE WINDOW