Internet Assigned Numbers Authority "about" URI Tokens Created 2012-06-12 Last Updated 2016-09-06 Available Formats [IMG] XML [IMG] HTML [IMG] Plain text Registry included below * "about" URI Tokens "about" URI Tokens Registration Procedure(s) First Come First Served Reference [RFC6694] Available Formats [IMG] CSV Token Description Reference The about:blank blank URI references [RFC6694] a blank page. The about:invalid URI references a non-existent document with a generic error condition. It invalid can be used [http://dev.w3.org/csswg/css3-values/#about-invalid][CSSWG] when a URI is necessary, but the default value shouldn't be resolveable as any type of document. Used as the document's srcdoc address of [http://www.whatwg.org/specs/web-apps/current-work/#about:srcdoc][Ian_Hickson] iframe srcdoc documents in HTML. For use in DOCTYPEs in legacy-compat HTML documents [http://www.whatwg.org/specs/web-apps/current-work/#about:legacy-compat][Ian_Hickson] when needed for compatibility with XML tools. The about:html-kind URI identifies the vocabulary html-kind of kind values [https://html.spec.whatwg.org/multipage/embedded-content.html#identifying-a-track-kind-through-a-url][David_Singer] in HTML specifications from W3C and WhatWG. Contact Information ID Name Contact URI Last Updated [CSSWG] CSS Working Group mailto:www-style&w3.org 2012-07-12 [David_Singer] David Singer mailto:singer&apple.com 2016-09-06 [Ian_Hickson] Ian Hickson mailto:ian&hixie.ch 2012-08-09 Licensing Terms