HTML 4 spec has rel="index" / rel="contents" / rel="up".
HTML 5 spec have no such elements.
Do they officially deprecated? Or may I just look in wrong place of HTML 5 spec?
What is the way to point to document index/TOC in HTML5 (in multi-page document)?
HTML 5 still have rel="prev" / rel="next" and naturally I expected for a way to express going up like in usual document navigation:
<Prev | Up | Next>
Thanks @Jordan for link that described reasons for rejection of top/index/up from HTML 5 spec.
A few more links:
So there is no machine readable possibility to go one level up (especially with previous HTML 4 rel="up"), despite presence of semantic meaning for navigating up in breadcrumb, hierarchical documentation and possible forums/boards.