I was just looking through the book again and found Fig5-41 on page 139. So it's clear that the top example is both by the book and clear. And the bottom example is just incorrect. Thanks all!
I have seen a number of drawings where a hole ends up with a larger tolerance east-west than north-south, so rather than expand the diametrical tolerance to cover both, I see two reference linear dimensions with separate control frames. (See top example) I was wondering if possible to combine...