You can remove the menu bar from your screen by using a command
similar to:
$ if f$trnlnm( "DECW$DISPLAY" ) .nes. ""
$ then
$   create/terminal/nowait -
        /resource=sys$login:decw_nomenures.dat -
        /window=(title="Nonmenu Decwindow",icon_name="NomenuDecw")

The magic resources file needed is (more or less) the following:
------------ decw_nomenures.dat -----------------
! DECTERM resources to reduce menubar down to one pixel height.
*decterm_mb*height: 1
*decterm_mb*resizeHeight: false
*decterm_mb*resizeWidth: false
DECW$TERMINAL.main.terminal.adjustFontSizes:    off
DECW$TERMINAL.main.terminal.saveLinesOffTop:    2048
DECW$TERMINAL.main.terminal.scrollVertical:     off
DECW$TERMINAL.main.terminal.cursorStyle:        1
DECW$TERMINAL.main.terminal.shareColormapEntries:       on
DECW$TERMINAL.main.terminal.autoResizeTerminal: off
DECW$TERMINAL.main.terminal.condensedFont:      off
----------- end of decw_nomenures.dat -----------------

The first 3 lines are the key to getting rid of the menu line by
squashing it to 1 pixel. You can set other resources to get variations,
select fonts, etc., but if you prefer to use the space the menu bar consumes
for a couple more lines of text, this will do it.