a word taken from the field of artillery, where one fires shots over and under a target so as to make sure and hit the target. Over and under, over and under, and one eventually hits the target. In Scientologyprocessing, running something in brackets means to run something happening to the individual, and to run it happening to others because of the individual, and to have it happening to others by others. For example: (1) times when the preclear was hit over the head with a baseballbat, (2) times another person was hit over the head with a baseballbat by the preclear, (3) others being hit by others with baseball bats. That's the mechanics of the bracket. —PDC Volume 5 Approved Glossary