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

======Description:======
This hook is triggered whenever the status bar of a visible window
**in dumb mode** is updated.

======Parameters:======
|$0 |Refnum of the window whose status bar was updated|
|$1 |Which status bar has changed, 0 or 1|
|$2- |The actual status bar that has been updated|

======Examples:======

======History:======