/nxxxx - Call a transaction in the same session (window)  
/*xxxx - Call transaction in the same session (window), whereby
         the initial screen is skipped.
/oxxxx - Call transaction in an additional session
/n     - To end the current transaction (Caution: Unsaved changes
         are lost without warning)
/i     - To delete the current session
/o     - To generate a session list
/ns000 - To end the current transaction and return to the starting
         menu
/nend  - To log off from the system
/nex   - To log off from the system without a confirmation prompt
         (Caution: Changes that were not saved are lost without
         warning)

Key:
xxxx = transaction code