Glossary?

I hope this is in the correct location. I imagine it's about an add-on but I'm trying to find on. The users on my recently migrated xF forum are asking for a glossary of terms. In searching I'm surprised I can only find one by Scandal. This might be fine but I can't seem to locate in instance of it running somewhere.

If there is some other feature under a different name that might allow me similar functionality I would appreciate being pointed in the correct direction.

It would be nice if...