This document captures the differences between various HTML specifications. Overview This document describes the perceptible differences between three HTML specifications: WHATWG HTML LS — The HTML Living Standard as maintained by the WHATWG W3C HTML 5.1 — The HTML Nightly document, targeted for standardisation by W3C in 2016. W3C HTML 5.0 — The HTML 5.0 document, currently in Candidate Recommenda