On a Prepcheck run each reading item (SF, F, LF, BD) from the assessed list of items on the prepcheck buttons.

Theoretically, each button can be run to F/N. In practice, one would not continue to run the buttons beyond EP for the subject being run. This EP would be signalled a major cog or regained ability with a wide F/N and VGIs and the charge on that item blown.

Each button in turn is run to F/N, Cog until full EP is attained on the subject being prepchecked. All of the buttons may need to be run in some instances to reach EP of the subject being handled. (Refer to HCOB 8 September 1963, Repetitive Rudiments and Repetitive Prepchecking for further data on prepcheck procedure.)

One then takes up and handles the next best reading items from the assessed list and continues until each reading item is handled.

The LRH datum (per HCOB 8 April 70) remains valid. The handling of an ARC Break to F/N on one of the buttons would end off that prepcheck button. One may run further buttons if the major Cog with wide F/N is not attained.

Get the most out of Prepchecks by running them to full EP with all charge blown.