The DFHTLT TYPE=INITIAL macro establishes the entry point and the address
of the start of the terminal list table being defined.

>>-DFHTLT--TYPE=INITIAL--+---------+--+------------+-----------><
'-,LDC=aa-' '-,SUFFIX=xx-'
- LDC=aa
- Code
this with a 2-character logical device code (LDC) mnemonic. This is associated
with every logical unit identification, except for those for which an LDC
mnemonic is specified on a DFHTLT TYPE=ENTRY macro.
- SUFFIX=xx
- The
module name of the TLT is DFHTLTxx, where xx is
a 1-or 2-character suffix. This provides unique identification for each TLT
used. Because the names TLTBA, TLTBB, TLTBC, and TLTEA are used within the
TLT, suffixes BA, BB, BC, and EA must not be used.
A TLT must have a suffix
to be used by the message switching transaction, CMSG.