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The ASCanvas project includes an implementation of the Canvas API, with various dependencies related to DOM, CSS and WebApps modules. The project allows some HTML5 webapps to be compiled into Flash byte code, targeting Flash Player 10.

The original ASCanvas was developed by Colin and released to CC0/MIT/public domain tri-license. It was intended to be used as a drop-in replacement for the Canvas element, in Internet Explorer, with Flash Player 9.

Charles Pritchard rewrote ASCanvas, to allow ECMAScript projects to be compiled, as the bridge between JScript and Flash Player was impractical for application development. A best-practices implementation of Canvas is being developed inside the ASCanvas project, intended for better generation of byte code, and easier editing, using ActionScript 3 (Flash Player 10) semantics.