CICS ⭐ Featured
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Q: What is attribute byte?

Answer:
Attribute byte controls field display. In BMS: ATTRB=(PROT,BRT). Protected, unprotected. Bright, normal, dark. MDT (Modified Data Tag) for transmission. Set in map or program.
attribute bms field
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Q: What is FRSET?

Answer:
FRSET (Field Reset) resets MDTs. EXEC CICS SEND MAP FRSET. Only changed fields transmitted back. Efficiency. Without FRSET, all unprotected transmitted. Use for repeat maps.
frset mdt reset
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Q: What is RECEIVE MAP?

Answer:
EXEC CICS RECEIVE MAP(name) MAPSET(mapset) INTO(symbolic-map). Gets terminal input. Modified fields only (MDT). Check EIBAID for key pressed. MAPFAIL if no data. Symbolic map populated with input.
receive map input