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The records with the ASSUME keyword remain on the screen when the file
is opened. When the display modes change, the records on the screen are
cleared. This is similar to specifying the ASSUME keyword without the
OVERLAY keyword. The display size of the file with the KEEP keyword must
equal the display size of the file with the ASSUME keyword.
Include the ASSUME keyword in the display file containing the help
record. If the ASSUME keyword is not present, the rest of the display is
blank while the help window is displayed.
a window should be displayed. The application opens window display file
DISPLAY2. This can be done from a separate program such as the one which
displayed the screen in Step 1. The ASSUME keyword on record DUMMY keeps
the full-screen display from being cleared, and the system marks display
file DISPLAY2 as suspended. No I/O operation ever needs to be performed
to record DUMMY; it only needs to be present in the file.
You can also use the KEEP and ASSUME keywords to pass data between
programs. The data is written to the display by the first program, and
used from the display by the second.
these are the words of the IBM
regards,
Wim
Booth Martin wrote:
What is the dummy record with the ASSUME keyword in DDS used for?
(I think I know, but someone asked a dumb question and like so many dumb
questions it started my head hurting.}
---------------------------------
Booth Martin
http://www.martinvt.com
---------------------------------
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