Template:Department:Page?/doc

Usage
This template takes one unnamed parameter, and looks for a department with that name. Returns non-blank only if the department page exists and is apparently properly set up.

Internals
This template pings the department page, and checks for the correct response by Department:Page. The correct ping response cannot result if the department doesn't exist, and is wildly unlikely if the department page isn't properly set up. This template does not use the  magic word.