Returns, as an INTEGER value, the number of
lines in the message area at the bottom of the window.
Note: Does not apply to SpeedScript programming.
Example
The
following example displays a message on each available message line:
r-messl.p
DEFINE VARIABLE ix AS INTEGER NO-UNDO.
DO ix = 1 TO MESSAGE-LINES:
MESSAGE "This is message line" ix.
END.
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