Control blocks

DFHZNAC references CSA, its own TCA, JCA, TCT prefix, TIOA, NIB, PCT, SIT, TCTWE, VTAM® RPL, VTAM ACB, and the NACP/NEP communication area.

As would be expected, however, the processing mainly concerns access to the TCTTE, and to the NACP/NEP communication area (COMMAREA), which is mapped by the DFHNEPCA DSECT.

See the CICS® Data Areas manual or the CICS Customization Guide for a detailed description of the NEP communication area.

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