Retrofitting FM 7 book to use templates

I'm inheriting a legacy project in FM 7 in which each doc in the book (about 12 docs, soon to grow) uses a separate variable and style set. I'd like to consolidate these and other aspects of the documents by basing them on the same template. What's the best approach to do that? I'm new to Framemaker and can't find any "save as template" or "apply template" type of functionality.

I know I can Import variable lists from one doc to another. But I'd like to be able to do global product name changes in one location.

Thanks for the newb help!