======Synopsis:======
[[on]] [<modes>]server_lost [<serial#>] [-|^]<match> { <action> }

======Description:======
This hook is triggered whenever the client is disconnected from any server
for any reason.

This hook is thrown when the server is in the CLOSING state, but before it
switches to the CLOSED state.  Whether or not the socket to the server is
still up, or usable, is undefined behavior.  If you need defined behavior,
catch [[on server_status]] for the switch to CLOSING.

======Parameters:======
|$0 |server refnum|
|$1 |server name|
|$2- |reason for disconnect. usually the same as your [[QUIT]](1) message|