Explicit sign-off removes the user's scoping. The user must be explicitly
signed on before signing off with the CESF transaction or the SIGNOFF command.
The user is returned to the default level of security.
Note: CESN will not sign the user off until a valid attempt has
been made to use the panel, even if the sign-on attempt subsequently fails.
It is not recommended that CESN be used for the Goodnight transaction.