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there are several Grades of Release below Zero, in the Minus Scale of the original complete Gradation Chart. Many of the Minus Scale can be attained by simple assessment. (And ceasing to assess the moment the release occurs is vital—don't keep on assessing as the same session auditing action. ) There are three specific Grades of Release below Zero and above the lower Minus Scale. These are, from lowest: Straightwire Release, Dianetic Secondary Release, Dianetic Engram Release. (HCOB 20 Sept 66)