Any default values specified with the SETDEF subcommand are canceled. The subcommand closes and deallocates the data set directory, problem directory, and any dumps allocated to the user. The subcommand closes but does not deallocate your user dump directory and the print output data set.
During a TSO subcommand session, a command such as LIST causes the TSO/E command associated with the command to be processed, not the IPCS subcommand associated with it. When END is entered during a TSO subcommand session, IPCS resumes its normal interpretation of commands.
END
When the END subcommand ends an IPCS session, IPCS returns the highest return code that was issued during the session.