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Encrypted Media Extensions
HTML 5 spec
HTML 5: The Markup Language
HTML WG website
HTML5 differences from HTML4
HTML5 Spec - PR Blockers
Media Source Extensions
pre-LC1 alt techniques
pre-LC1 authoring guide
pre-LC1 HTML 5 spec
Erika Doyle Navara
Philippe Le Hégaret
Joshue O Connor
The "up" link relation, when repeated, has a meaning of multiple levels up, depending on the repeat count. This is an incompatible change from HTML4, and also inconsistent with other specifications that use link relations (Atom, HTTP Link header).
A specific point of concern: relList lists repeated relations only once, and therefore does not convey the semantics of repetition.
Note that finding a substitute for the "repeated relation" pattern is not an objective of this issue. If people feel that this is a desirable feature, then it should be pursued as separate proposal.
The related bugzilla bug is: http://www.w3.org/Bugs/Public/show_bug.cgi?id=7543
Add notes (no markup allowed, URIs get automatically hyperlinked):
Compat issue with the current spec: http://krijnhoetmer.nl/irc-logs/whatwg/20100917#l-1078
Closed by amicable resolution: http://lists.w3.org/Archives/Public/public-html/2011Mar/0187.html