Go forward to Unavailable Servers.
Go backward to Creating a Virtual Server.
Go up to The Server Buffer.

Servers and Methods
-------------------

   Wherever you would normally use a select method (eg.
`gnus-secondary-select-method', in the group select method, when
browsing a foreign server) you can use a virtual server name instead.
This could potentially save lots of typing.  And it's nice all over.