Mostly written in PL/1, I describe some of them

Programm APPTDD10 Online, uses CICS + DB2 + PL/1

Programm APPTIND Online, uses CICS + VSAM + PL/1

Programm DDREP01 Batch, uses PL/1 + DB2

Programm DK553V2 Batch, uses DB2 + IMS + PL/1

Programm NPK1 Routine, PL/1 and Pointers