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

======Description:======
This hook is triggered whenever a server sends the client an
ERROR message.

======Default behavior:======
If you do not suppress this event, the client will format the message
and display it to your screen.

======Parameters:======
|$0    |server who sent the message (your server) |
|$1-   |the text of the error message |