This appendix shows how the APPC programming language (described in Transaction Programmer’s Reference Manual for LU Type 6.2, GC30-3084) is implemented by CICS®.
The appendix contains three main sections:
The CICS application programming interface for basic, or unmapped, conversations is described in State transitions in APPC basic conversations. These tables show how the APPC verbs map to the EXEC CICS commands.
The CICS application programming interface for mapped conversations is described in State transitions in APPC mapped conversations. For programming information about the full syntax of EXEC CICS commands for APPC mapped conversations, see the CICS Application Programming Reference. These tables show how the APPC verbs map to the EXEC CICS commands.
How the CICS APIs differ from the APPC architecture and their effects on the CICS application programmer are discussed.
For information on which APPC option sets are supported by CICS and which are not, or on how CICS implements the APPC control operator verbs, see the CICS Intercommunication Guide.
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