/sys$common/syshlp/helplib.hlb LSEDIT, Command Qualifiers, /DISPLAY  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  /DISPLAY=CHARACTER_CELL (D)
  /DISPLAY=DECWINDOWS
  /DISPLAY=display-filespec
  /NODISPLAY

  Specifies which screen manager you want to run.

  The /DISPLAY command qualifier is optional.  By default, LSE  uses  the
  character-cell  screen  manager.   As  an  alternative  to the /DISPLAY
  qualifier,  you  can  define  a  logical  name  LSE$DISPLAY_MANAGER  as
  DECWINDOWS, CHARACTER_CELL, or as a screen manager file specification.

  If you specify /DISPLAY=CHARACTER_CELL,  LSE  uses  the  character-cell
  screen  manager,  which runs in a DECterm (or VWS) terminal emulator or
  on a physical ANSI terminal.

  If you specify /DISPLAY=DECWINDOWS,  LSE  uses  the  DECwindows  screen
  manager, which create a DECwindows window in which to run LSE.

  In order to use LSE  from  a  unsupported  input  device,  such  as  an
  non-ANSI  CRT  or  from  a batch file, the /NODISPLAY qualifier must be
  specified.  This is useful for executing a script of  LSE  commands  or
  TPU statements specified by the /INITIALIZATION or /COMMAND qualifiers.
  You  cannot  use  the  /NODISPLAY  qualifier  if   the   logical   name
  LSE$DISPLAY_MANAGER specifies the DECwindows window manager.