CANCELLER
  1. in Dn processing we used to use what was called a "canceller." At the beginning of the session, the preclear was told that anything which had been said to him would be cancelled when the word cancelled was uttered at the end of the session. This canceller is no longer employed, not because it was not useful but because lock scanning provides the means of scanning off all the auditing. This is a far more effective and positive mechanism than the canceller. (SOS, Bk. 2, pp. 228-229)
  2. a contract with the patient that whatever the auditor says will not become literally interpreted by the patient or used by him in any way. It prevents accidental positive suggestion. (DMSMH, p. 200)