Previously: #377, #495.

• 2. Shadow Tree (=> DOM Standard; information in "Shadow DOM" is obsolete)
• 3. Mutation algorithms (=> DOM Standard; information in "Shadow DOM" is obsolete)
• 4. Events (=> DOM Standard, UI Events, Touch Events; information about UI and Touch already removed from "Shadow DOM" and the remainder is obsolete)
  • DOM Standard
  • UI Events: Define retargeting steps w3c/uievents#157
  • Touch Events: "List of TouchEvent types" contains requirements w3c/touch-events#84
• 5. User interaction
• 6. HTML Elements in Shadow Trees (=> HTML Standard; information in "Shadow DOM" is obsolete)
• 7. Elements and DOM interfaces (=> DOM Standard and HTML Standard)
  • DocumentOrShadowRoot extensions
  • Shadow.prototype.innerHTML: innerHTML should be defined on ShadowRoot interface in addition to Element interface w3c/DOM-Parsing#21

Outstanding issues in DOM and HTML:

• https://github.com/whatwg/dom/labels/shadow
• https://github.com/whatwg/html/labels/topic%3A%20shadow

Outstanding issues in this repository:

• https://github.com/w3c/webcomponents/issues?q=is%3Aopen%20label%3Av1%20label%3Ashadow-dom