TSO/E customization facilities enable you to customize a number of TSO/E commands. You can:

• Customize the way users run a console session using the CONSOLE and CONSPROF commands.
• Customize the way users allocate and manage data sets.
• Customize the way users define alternative libraries of REXX execs and CLISTs using the ALTLIB command.
• Customize the way both EDIT and EXEC work.
• Customize how users send and retrieve messages using the SEND and LISTBC commands, and the SEND subcommand of the OPERATOR command.
• Allow or prevent users from using TRANSMIT and RECEIVE. If you allow these commands, you can tailor their processing.
• Customize how the FREE, PARMLIB, and OUTDES commands work.
• Customize the way users submit jobs, process output, and print data sets.
• Customize the way users test assembler programs.
• Customize the way users define alternative load module libraries using the TSOLIB command.