The bit operations are:
The BITOF and BITON operations allow you to turn off and on specific bits in a field specified in the result field. The specified field must be a one-position character field.
The TESTB operation compares the bits identified in factor 2 with the corresponding bits in the field named as the result field.
In these operations, if factor 2 contains a 1-byte hexadecimal literal, the bits in the factor 2 entry will affect the result field entry in the same way a 1-byte character field would affect it.
(C) Copyright IBM Corporation 1992, 2006. All Rights Reserved.