Overview of TSO/E programming services

TSO/E provides various services that your programs can use to perform the tasks described below. Table 1 summarizes the TSO/E services that are described in this book. In addition to these services, TSO/E also provides REXX programming and customization services you can use for REXX processing. These REXX services are explained in z/OS TSO/E REXX Reference.

Table 1. Summary of TSO/E services
Task	Service	Reference
Establishing a TSO/E environment outside of the TSO/E TMP and Service Routines	TSO/E Environment Service	Using the TSO/E Environment Service IKJTSOEV
Invoking TSO/E service routines	CALLTSSR macro instruction	Invoking TSO/E service routines with CALLTSSR
Checking the syntax of subcommand names	Command Scan Service Routine	Verifying subcommand names with IKJSCAN
Checking the syntax of command and subcommand operands	Parse Service Routine	Verifying command and subcommand operands with parse
Controlling terminal functions and attributes	Terminal control macro instructions	Using the terminal control macro instructions
Processing terminal I/O	BSAM and QSAM	Using BSAM or QSAM for terminal I/O
	TSO/E I/O service routines	Using the TSO/E I/O service routines for terminal I/O
	TGET/TPUT/TPG macros	Using the TGET/TPUT/TPG macro instructions for terminal I/O
	TSO/E Message Handling Routine	Using the TSO/E message handling routine IKJEFF02
Handling attention interruptions	STAX service routine	Using the STAX service routine to handle attention interrupts
Handling attention interruptions	CLIST attention facility	Using the CLIST attention facility
Obtaining a list of data set names	ICQGCL00	Obtaining a List of data set names
Ensuring that data sets contain enough space	Space management	Using the space management CLIST ICQSPC00
Changing alternative library environments	Alternative library interface routine	Using IKJADTAB to change alternative library environments
Allocating, concatenating and freeing data sets	Dynamic allocation interface routine	Using the dynamic allocation interface routine DAIR
Retrieving information from the system catalog	Catalog information routine	Using IKJEHCIR to retrieve system catalog information
Constructing a fully-qualified data set name	Default service routine	Constructing a fully-qualified data set name with IKJEHDEF
Analyzing return codes	DAIRFAIL	Using the DAIRFAIL routine IKJEFF18
Analyzing return codes	GNRLFAIL/VSAMFAIL	Analyzing error conditions with GNRLFAIL/VSAMFAIL
Searching lists of authorized commands and programs as well as commands not supported in the background	Table look-up service	Using the table look-up service IKJTBLS
Invoking commands, CLISTs, REXX execs and programs	TSO/E Service Facility	Using the TSO/E Service Facility IKJEFTSR
Accessing CLIST and REXX variables	Variable access routine	Using the variable access routine IKJCT441
Retrieving information from the names directory	ICQCAL00	Accessing the Information Center Facility names directory
Displaying printers	Printer support CLISTs	Using the printer support CLISTs
Invoking Information Center Facility applications	Application invocation function	Invoking an Information Center Facility application
Retrieving system messages issued during a console session	GETMSG service	Using the GETMSG service
Using the Unauthorized Resource Processor	IKJURPS service	Using the Unauthorized Resource Processor Service IKJURPS