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Guidelines |
Subsystem access considerations
Subzero supports standard techniques for application programs to interact with supported subsystems. However, applications that use nonstandard or undocumented techniques for performing routine functions within the subsystem might need modifications to work correctly with Subzero.
Subzero supports only publicly documented access to subsystems. No cross-memory connection exists between the client address space (such as CICS) and the subsystem.
Any attempt to access control blocks in either environment from the opposing environment is likely to fail.
Subzero does not attempt to emulate environments or simulate functions other than those required to process standard subsystem initialize, read, update, and terminate functions.
Subzero does not ensure the integrity of control block pointers, except for those required for standard, documented subsystem access.
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