Which strings are valid entries in the command field?

/nend
/nex
/nsm04
From SAP Easy Access: search_sap_menu

You can enter valid transaction codes directly on the SAP Easy Access screen. If you are in another function, you need to enter /n in front of the transaction code. /nend and /nex are two different logoff options. ?SM04 is not a valid entry. search_sap_menu is a valid entry; it creates a search screen for entries in the SAP menu.