The following prompts are displayed.

On

Regenerates the drawing immediately if any suppressed regenerations exist in the queue
and continues to regenerate automatically whenever you perform an action that requires
regeneration.

Off

Inhibits regeneration of the drawing until you use the REGEN or REGENALL command,
or set REGENAUTO to on.

If you perform an action that requires a regeneration and that action is irrevocable
(such as thawing layers), the following message is displayed:

Regen queued

If you perform an action that requires a regeneration and that action is revocable,
the following message is displayed:

About to regen—proceed?

If you click OK, the drawing is regenerated. If you click Cancel, the last action
is cancelled and the drawing is not regenerated.