5D3 AE Lock

In evaluative metering, does the AE lock meter centerpoint or bias where the AF point is?

What about other modes such as spot metering?

Thanks ahead.

Edit:
Simply as a guess, I think AE lock will meter AF point biased in evaluative and center-point for spot (regardless of AF point). Right or wrong?

Nevermind...found my answer. Pg 171. Should have just RTFM.

Really wish spot metering was AF-point linked.