DOS Fn 4cH: Terminate Program

                                                         Compatibility: 2.0+ 
 Expects: AH    4cH
          AL    exit code▲ to return to parent (or for ERRORLEVEL)
 Returns: none  (not applicable)
    Info: Returns control of a child process to its parent, setting an exit
          code value that may be queried by DOS Fn 4dH.

          Control is passed to the Terminate Address of PSP of the exiting
          program.  Ctrl-Break and Critical Error handler vectors are
          restored to the addresses from the parent's PSP.

   Notes: ■ The ERRORLEVEL value (used in DOS batch files) can be used to
            check the exit code of the most recent program.

See Also: Process Control Functions
          Program Startup & Exit
          DOS Functions