A scrubber is a mechanism that provides overflow protection in the event of a system halt.
The background scrubber has been replaced by a more robust and efficient mechanism for recovering overflow after a system halt.
See Also
clear-file Command, coldstart Command, create-file Command, FID, init-ovf Command, Maxfid, Overflow Table, set-ovf-reserve Command, set-runaway-limit Command, user-coldstart Macro, what Command