While a UTM application is running, a user can output the last dialog message once again with the KDCDISP command.
If the user enters the KDCDISP command after the sign-on service has concluded or after returning from an inserted service, openUTM redisplays the last screen of the last session or the last screen of the interrupted service.
For information on screen output in FHS-DE formats, see also the
section “KDCDISP, KDCLAST in FHS-DE formats” (KDCLAST - repeat the last output).
The KDCDISP command is useful in the following situations:
As a result of transmission problems or operating errors at the terminal, the screen content after a dialog output is partially or fully destroyed.
The user has received asynchronous messages on the screen while processing a service (either requested with KDCOUT or sent automatically by openUTM) and then wants to continue the open service. In this case, the KDCDISP command is issued to redisplay the last dialog output.
If the user wants to continue the service directly in the asynchronous format message, openUTM implicitly creates a KDCDISP and the input must be repeated.
When the UTM application has been terminated and restarted, the user can (for orientation purposes) issue the KDCDISP command to repeat the last dialog output of the service concluded before the application terminated. However, this only applies with a UTM-S application and if the service restart facility was not explicitly deactivated by the KDCDEF statement USER ...,RESTART=NO (or LTERM ...,RESTART=NO, if the application was generated without user IDs).