Can you block project and action group line items from perspectives?

I have a few perspectives that I use for maintenance - like checking for items with no contexts and no duration. However, they are completely cluttered with Action group names and Project names. I want an option to be able to just show tasks/action items in Perspectives.

Nevermind, I found out how to do it. Preferences->Organization [x] include projects and groups. All the non-Project Perspectives respect it.