User:PorkchopGMX/sandbox/Registered or not?/doc

Usage
This can be used to detect whether you are logged in or out. This template is based heavily on WP:PERM/Subpage which appears on Requests for permissions and its subpages.

Parameters
This template uses two parameters:

Unregistered parameter: Message that is shown to users that are not logged in.

Registered parameter: Message that is shown to users that are logged in.