[1] cleanup of some sections that weren't all that (drop <tabbox>, <switc… (Hixie著, ) https://github.com/whatwg/html/commit/438d3386acc69747245f9c0d9015d3867b82d9a1
[2] [Proposal] New tags <tabsection>, <tablist>, <tab>, <tabpanel> · Issue #1809 · whatwg/html () https://github.com/whatwg/html/issues/1809