Why must all CICS programs have a Linkage Section ?

Answer Posted / pawan

CICS is itself a parent program under which our cics
application programs run as a sub programs. As every sub
program has a linkage section we also hav linkage section
in our program wherein the using verb we provide dfhcommlen
as argumeent. But its not written explicitly in our
programs as all programs include them automatically
whenever the are called under the CICS system.

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