book integration with organic groups.

Issue Summary

I have an OG site. I have a book. I would like to make the book viewable to some groups but not all groups. Here is the catch.. when the book is added to a group, I want the entire BOOK to be made available to that group. at the moment, I have to goto each page and make the page a member of the group.

I would also like to do something like this in domainaccess.