Selecting the screen flushing level (sys.AutoFlush)ΒΆ
sys.AutoFlush,,i1 |
Screen flushing level |
Selects the screen flushing level. May be set to ON or OFF.
The Sculptor windows system maintains two maps of the screen in memory, one representing the actual appearance of the screen, the other representing the way the screen should look if it were completely up to date. When a command sends output to the screen, only the second of these is updated.
The existence of these two memory maps means that when Sculptor updates a screen it is able to send only those characters which have actually changed, thereby speeding up the screen display considerably. This is particularly beneficial on a dumb terminal.
If sys.AutoFlush is ON, changes which update the screen are flushed after every output command, automatically keeping the actual appearance of the screen completely up to date.
If sys.AutoFlush is OFF, then changes which update the screen are flushed only when Sculptor decides a flush is necessary, when the dialog command is executed, for example, or when the flush screen command is given. It is useful to turn sys.AutoFlush OFF when executing several commands which all output to the screen, in circumstances where it is not necessary to update the screen itself until they are all completed.
The default for sys.AutoFlush is ON.
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