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The BELL command determines whether the audible alarm is sounded by various QM verbs (typically on encountering error conditions) or by QMBasic programs using the @SYS.BELL function in a print operation directed to the terminal.





BELL OFFTo disable the audible alarm


BELL ONTo enable the audible alarm



@SYSTEM.RETURN.CODE is returned as

0after BELL OFF
1after BELL ON
-veafter an error



Printing CHAR(7) to the terminal sounds the audible alarm regardless of the setting of the bell status.