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

======Description:======
This hook is triggered whenever you are 
  1) [[kill]]ed by an operator, 
  2) Run a command that sends data to the server, in a window that is not connected to a server
  3) You [[disconnect]] from your last server.
and perhaps for other reasons in the future.

======Parameters:======
|$*  | The string "Killed by <oper> (<reason>) or the string "No Connection to <server>" or the string "Disconnected by user request", respectively |

======Default behavior:======
If you don't suppress this event, the client will format and display a 
message to your screen.

======Examples:======
To customize the disconnection message:
   on ^disconnect * (server) {
      xecho -b Disconnected from $server at $Z
   }