SAP command field entries

/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)

/h   - Start the Debugger
/hs  - Start System Debugging
/ha  - Start Debugging but without screen handling

Key:
xxxx = transaction code