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that branch of Dn which uses Dn in special ways for specific purposes. It is not
HSDC Dn. Its position on the grade chart would be just above Class IV. Its proper number is Class IVA. It uses Dn to change an Oxford Capacity Analysis (or an American Personality Analysis) and is run directly against these analysis graphs and the Science of Survival "Hubbard Chart of Human Evaluation." Expanded Dianetics is not the same as Standard Dn as it requires special training and advanced skills. The main difference between these two branches is that Standard Dn is very general in application. Expanded Dn is very specifically adjusted to the pc. Some pcs, particularly heavy drug cases, or who have been given injurious psychiatric treatment or who are physically disabled or who are chronically ill or who have had trouble running engrams (to name a few)
require a specially adapted technology. (HCOB 15 Apr 72) Abbr. Ex Dn, XDn.