mtrootyy

Ref: https://github.com/whatwg/html/commit/ebbb1c0d8d96290d201b5cf2f18642de088ba363

Ref: https://github.com/whatwg/html/commit/6c20fe5c7a150899844a4ff13fdde1441663a828

Ref: https://github.com/whatwg/html/commit/a187fec147a068feb7cfe2448329e61475261fa0

Ref: https://github.com/whatwg/html/commit/7bab05ac69e7992be25b23b2017b03d2ef4f7869

Ref: https://github.com/whatwg/html/commit/19faae719761eceb9568b92ee79e266f81a2b73d

Ref: https://github.com/whatwg/html/commit/e21d9ff0d6615d2c85060a7a00a2a2fe2c0db846 Ref: https://html.spec.whatwg.org/multipage/scripting.html#the-script-element:the-script-element-2

Add commandfor & command attributes to button element, and add oncommand attribute

1

Ref: https://github.com/whatwg/html/commit/81fa58f053452aaddf558a3cc09e05a3b082941e

Ref: https://github.com/whatwg/html/commit/f2d8b88655e96baac783244d35ac61106187cd04

Ref: https://github.com/whatwg/html/commit/8029d4f2782f78fd23540484d960f8ba25798600

It is not reflected in the outline check. ``` Heading Level 1 Level 2 Level 3 Level 3 Level 4 Level 5 Level 5 Level 3 Level 2 Level 3...