In Prepchecking procedure of 1962, first a broad question was asked regarding the whole subject to be cleared (Zero question), and then further questions were asked based on what withholds were found. These questions were given numbers such as 1, 1A, 1B, 1C, etc., to indicate their sequence. The questions were aimed at finding related withholds to the area being addressed in order to release the whole chain of withholds. See also Prepchecking and Zero question in this glossary.—ProTRs Transcript Glossary. Final approval 29/10/89