User`s guide

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The semaphore is set during the connect process because the emulator is in an inbound disabled state.
The semaphore is cleared for the first time when outbound data destined for the connecting DOID is
received by the emulator. Because the emulator is in an inbound disabled state, a host application
cannot be started via a Write Structured Fields (127) function call. The host application must be started
manually, or by issuing a Send Key (3).
Only one DDM base-type connection is allowed, per host session. If the DDM connection supports
SDP for the DOID, multiple connections are allowed.
If return code RC=32 or RC=39 is received, an application is already connected to the selected session,
and use of that presentation space should be very carefully approached. Otherwise, conflicts with File
Transfer or other Windows HLLAPI applications may occur.
Structured fields are not supported by the COBOL programming language
due to memory access problems inherent to the language.
Note