This document is a non-normative reference that provides details to help producers of HTML content create conformant documents, and to help others check the conformance of existing documents. It has the following design goals:
The first two of the above design goals make this reference similar in scope to the [HTML5 for Web Authors] subset of the normative [HTML5] full specification.
Certain purposes are intentionally out of scope for this reference document; specifically, it:
For implementation conformance criteria for HTML consumers and detailed information on related APIs, instead see the [HTML5] full specification.
Finally, because this document is intended for use strictly as a reference, it does not attempt to also be a tutorial or “how to” authoring guide.