* A spec issue for some change that would make it possible to test ([https://github.com/whatwg/fullscreen/issues/70 example]).
* A Bugzilla bug for the creating web-platform-tests.
''Secure contexts'': Provide justification if this feature is not restricted to secure contexts, e.g., web compatibility requires it to not be restricted. Otherwise, use "Yes"and ensure it is suitably restricted.<br>
''Is this feature enabled by default in sandboxed iframes?'' If not, is there a proposed sandbox flag to enable it? If allowed, does it preserve the invariants in terms of what sandboxed iframes can do?
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