Expands or contracts the window associated with a screen display.
     The  EXPAND  command  moves  one  or  more display-window borders
     according to  the  qualifier(s)  specified  (/UP,  /DOWN,  RIGHT,
     /LEFT).   For  example,  the  following  command  moves the right
     border of display SRC four columns to the right, and  the  bottom
     border six lines up:

          EXPAND/RIGHT:4/DOWN:-6 SRC

     The EXPAND command does not affect the order of a display in  the
     pasteboard  circular  list.   Depending  on the relative order of
     displays, the EXPAND command may cause the specified  display  to
     hide  or uncover another display or be hidden by another display,
     partially or totally.

     Except for the PROMPT display, any display can be shrunk down  to
     the  point  where  it  disappears (at which point it is marked as
     "removed").  It can then be expanded from that point.  The PROMPT
     display  cannot  be shrunk (or expanded) horizontally, but can be
     shrunk vertically to a height of 2 lines.  Contracting a  display
     to  the  point  where  it  disappears  will  cause it to lose any
     attributes that were selected for it.

     A window border can be expanded  only  up  to  the  edge  of  the
     screen.   Thus,  specifying  EXPAND/DOWN:99 SRC lowers the bottom
     border of display SRC to the bottom edge of the screen.

     The left and top window borders cannot  be  expanded  beyond  the
     left  and  top  edges  of  the  display, respectively.  The right
     border can be expanded up to 255 columns from  the  left  display
     edge.   The  bottom border of a source or instruction display can
     be expanded down only to the bottom edge  of  the  display  (last
     line of the source module or last instruction of the routine).  A
     register display cannot be expanded beyond its full size.

     In the case of an OUTPUT or  DO  display,  the  scrolling  region
     preserved  in  memory  extends  to 64 lines by default but may be
     increased or decreased  through  the  /SIZE  qualifier  with  the
     DISPLAY and SET DISPLAY commands.

 Format:

     EXPAND /qualifier[...] [disp_name [,disp_name...] ]

Additional information available:

ExamplesKey DefinitionsParametersQualifiers

     DBG> EXPAND/DOWN:99 FOO  ! Move the bottom border of display FOO
                              ! down to the bottom edge of the screen
     DBG> EXPAND/UP/RIGHT:-6  ! Move the top border of the current
                              ! scrolling display up by 1 line, and
                              ! the right border to the left by
                              ! 6 columns.

     Several keypad keys have  been  bound  to  the  EXPAND  and  MOVE
     commands,   to  facilitate  expanding,  contracting,  and  moving
     displays.  (See HELP KEYPAD STATE_KEYS for more information).

 disp_name

     The name (or list of  names)  of  the  screen  display(s)  to  be
     expanded  or  shrunk.   If  this  name  is  omitted,  the current
     selected scrolling display is used.  (See HELP SELECT/SCROLL).

Additional information available:

/DOWN/LEFT/RIGHT/UP

     Move the bottom border of the display down by n lines  (if  n  is
     positive)  or up by n lines (if n is negative).  If n is omitted,
     the border is moved down by  1  line.   See  the  EXPAND  command
     description for restrictions.

     Move the left border of the display to the left by n lines (if  n
     is positive) or to the right by n lines (if n is negative).  If n
     is omitted, the border is moved to the left by 1 line.   See  the
     EXPAND command description for restrictions.

     Move the right border of the display to the right by n lines  (if
     n  is positive) or to the left by n lines (if n is negative).  If
     n is omitted, the border is moved to the right by  1  line.   See
     the EXPAND command description for restrictions.

     Move the top border of the  display  up  by  n  lines  (if  n  is
     positive)  or  down  by  n  lines  (if  n  is negative).  If n is
     omitted, the border is moved  up  by  1  line.   See  the  EXPAND
     command description for restrictions.