Talk about applicability.
Add search example.
Start Resource Hint Registry
Typo
remove "Future…" text where appropriate
Massage "managing change" text; changing URIs is sometimes necessary and good.
add media type registration TBD
update open issues
update XML for -03
Add FAQ about include/inheritance; TODO for possible inclusion.
add requirement to describe hint content in terms of JSON.
regen XML
update 4288 ref to 6838
update XML