Acceptance criteria

1. • The listed features are documented sufficiently on MDN
2. • BCD is updated
3. • Interactive example and data repos are updated if appropriate
4. • The content has been reviewed as needed

Features to document

1. removing <menuitem> from the web. This is pretty much just a Firefox change, all other browsers seem to have disabled <menuitem> already. Rel note and BCD?

Related Gecko bugs

1. • Hide behind a flag

For folks helping with Firefox-related documentation features — make sure above AC have been done, but also:

• Set bugs to dev-doc-complete
• Add entry to Firefox release notes if feature is enabled in release
• Add entry to Firefox experimental features page if feature is not yet enabled in release