HTML <iframe>: allow attribute needs stand-alone topic

[hamishwillee]

MDN URL

https://developer.mozilla.org/en-US/docs/Web/HTML/Element/iframe#allow

What specific section or headline is this issue about?

The topic named iframes

What information was incorrect, unhelpful, or incomplete?

The iframes attribute allow is used to set a permission policy for the frame. The current documentation in https://developer.mozilla.org/en-US/docs/Web/HTML/Element/iframe#allow is insufficient. There is quite useful information in https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Permissions-Policy#iframes - probably too much to stick into the above document.

So the proposal is to create a stand-alone document for the allow attribute, pulling in the information from the Permissions-Policy document linked above. The Permissions-Policy document then might have a reduced set of information and a cross link.

What did you expect to see?

Much of the information in https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Permissions-Policy#iframes

Do you have any supporting links, references, or citations?

Discussion originates in #32135 (comment)

Do you have anything more you want to share?

No response