- Program linkages and save areas
- Obtaining PARM data from the EXEC statement
- QSAM macros and processing
- SYNAD routines
- Subroutines and the Linkage Editor
- The Program Binder
- Debugging and dump reading
- Timing services
- The WTO
- TIME, STCKCONV, CONVTOD macros
- The SNAP macro
- Managing print files
- Variable length records
- QSAM update in place (PUTX)
- Dynamic serial linkages: LINK, LOAD, DELETE, XCTL
- Virtual storage services: GETMAIN, FREEMAIN
- Writing reentrant programs
- I/O in AMODE 31
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