Userhost
This will watch for messages that originate from a particular
Userhost, and highlight the text for that message. Userhost
entries may contain wildcards. Examples:
`fred!fdoe@doe1.powernet.edu'
This will highlight only messages from fred at that
particular address.
`fred!*@*'
This will highlight messages from anyone named fred,
regardless of address or login name.
`Fred!*@*.powernet.edu'
This will highlight messages from anyone named fred on
any machine on powernet.edu
`*!*@doe1.powernet.edu'
This will highlight any messages from anyone on the doe1
machine at powernet.edu
`*!*@*'
This will highlight any messages from any user.