The HCOB 29 Jan AD 20 which amends a series of earlier HCOBs and introduces the idea that you ask "Did that incident erase" (which is not asked now) is cancelled.
The correct End Phenomena of Dianetics is F/N plus Cognition plus VGIs.
This HCO B also introduced enforcing an F/N by calling off the item.
The actual fact is that you should not cut into the pc's end phenomena with premature questions or F/N indications. The pc is introverted and such actions by the auditor extrovert his attention and annoy the pc and spoil the correct End Phenomena which is F/N + Cog + VGIs.
Actions by the auditor such as "Your needle is floating" "Did it erase", etc chop the pc before full End Phenomena is attained.
When End Phenomena is fully attained on a Dianetic chain the auditor need only go on to the next flow or end the session.