Stale Window Background

Here is my scenario.
1. PGMA displays SCREEN1, then calls PGMB.
2. PGMB displays a window.  User presses F3. PGMB returns leaving it's
display file open and LR off.
3. PGMA displays SCREEN2, then calls PGMB.
4. PGMB displays a window

In the above scenario, the background displayed upon execution of step 4 is
the same background as displayed in step 2.  This situation persists until
the display file in PGMB is closed.  Given that PGMA and PGMB must remain
distinct programs, is there a way to have the current background displayed
when PGMB displays it's window?  It seems kludgy to close PGMB's display
file every time it's called.  Below is the DDS for PGMB.


A                                      DSPSIZ(24 80 *DS3)
A                                      INDARA
A                                      PRINT
 *-------------------------------------------------------------------
A          R WINMSG
A                                      CF03(03)
A                                      CF12(12)
A                                      WINDOW(*DFT 5 50)
A            MSG1          50   O  1  1
A            MSG2          50   O  2  1
A            MSG3          50   O  3  1
A                                  4  1'Press Enter to Continue ...'
A                                      COLOR(BLU)
 *-------------------------------------------------------------------
A          R ASSUME
A                                      ASSUME
A            DUMMY          1      4 48

Thanks, Dave

David Keck
NBTY, Inc
Phone (631) 200-5809
DavidKeck@xxxxxxxx