Including information on CICS/ESA Version 3, this book covers: program control, including the use of CALL, XCTL, and LINK with and without COBOL II; programming with DB/2 and IMS/DLI; file control with native VSAM files, including virtual storage utilization and performance enhancement hints; storage control including programming with DFHCOMMAREA, temporary storage, and other internal CICS storage; and CICS/ESA Version 3 enhancements to the command-level interface.