numeric
Whether or not the system beeps when an error occurs.
By default (error_beep = 1) a beep is issued when a language error occurs and the error log window is currently not visible (or iconised).
This behavior may be changed to "do not beep" by setting the value of this identifier to 0.
The errlog -q command also suppresses the beep, but only when the error log window is iconised.
At system start-up error_beep has a value of 1.