[1] manakai makes use of some user data names (as used with
getUserData and setUserData
methods of Node interface) for its own purpose.
| User Data Name | Value | Description |
manakai_has_reference | boolean | Whatpm::HTML sets this user data to charset attribute of meta element, as a flag whether the attribute contains any character entity reference or not. This user data is referenced by Whatpm::ContentChecker::HTML for conformance checking of charset attribute. |
manakai_title_metadata | DOMString | This user data can be specified for a Document. It represents the title metadata from a higher-level protocol. It is used to check the conformance of an HTML document with no title element. |