- From: <bugzilla@jessica.w3.org>
- Date: Mon, 24 Aug 2015 15:48:33 +0000
- To: public-html-bugzilla@w3.org
https://www.w3.org/Bugs/Public/show_bug.cgi?id=28674
--- Comment #2 from Duff Johnson <duff@duff-johnson.com> ---
All in all, the definition has been completely re-written and made more
stringent, and includes dependencies on other (new) elements (<section>):
- In HTML 4 the definition emphasizes "importance" of the heading. This is (and
certainly has historically been interpreted as) orthogonal to the "formal"
purpose of headings - specifically - identification of content sections.
- In HTML 5 the definition ignores the question of "importance" and restricts
("must") use of H1-H6 to section headings. The heading numbers are "ranks"
rather than being indications of importance.
- The interaction with <section> is also new to HTML5 - and fundamental to the
implementation of H1-H6 (not least, because it allows for more than 6 heading
levels).
- There are additional specifications for headings in the case of <td> and
<blockquote> elements.
I hope this helps.
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Received on Monday, 24 August 2015 15:48:35 UTC