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

======Description:======
This is hooked by fairly useless but necessary in beta yell()s. They
are present in the client for debugging purposes, and scripters may not
want them to appear. [[ON]] ^yell will suppress their output.

======Parameters:======
|$* |text of the yell()|