Public Identifiers for entity resolution in XHTML. This document adds an additional public identifier that should be recognized by XHTML user agents and cause the HTML character entity definitions to be loaded. Unlike the identifiers already listed by the HTML5 specification, the identifier added by this extension references the set of definitions that is used by HTML.
The srcset attribute. When authors adapt their sites for high-resolution displays, they often need to be able to use different assets representing the same image. We address this need for adaptive, bitmapped content images by adding a srcset attribute to the img element.
Learn more about the HTML Activity.
crawled from : W3
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