logout command

[Mark Burton <markb@ordern.com>]

Hello again,

A couple of issues re the logout command (section 2.14 of 04)

>   An initiator MAY use a logout command to remove a connection from a 
>   session or to close an entire session. 

How is the entire session closed? there doesn't seem to be any option
in the PDU that says "zap all the connections in this session"

>   This is the ExpStatSN for the connection to be closed. 

I don't understand the need for this, please explain.

many thanks,

Mark