This can, for instance, be used to draw graphs, make photo composition or simple (and not so simple) animations. The images on the right show examples of implementations <canvas> which they will be in the future in this tutorial. <canvas> was first introduced by Apple for the Mac OS X Dashboard and later implemented in Safari and Google Chrome. Gecko 1.8-based browsers, such as Firefox 1.5, also support this element. The <canvas> element is part of the WhatWG Web applications 1.0 specification also known as HTML5. HTML5 presentation. HTML5 differences from HTML4 -- W3C. Abstract HTML is the core language of the World Wide Web.
The W3C publishes HTML5 and HTML5.1. The WHATWG publishes HTML, which is a rough superset of W3C HTML5.1. "Differences from HTML4" describes the differences of the HTML specifications from those of HTML4, and calls out cases where they differ from each other.