Note: SGML (Standard Generalized Markup Language) is a standard for how to specify a document markup language or tag set. HTML is based on SGML.

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Note: Scalable Vector Graphics (SVG) is an XML-based vector image format for two-dimensional graphics with support for interactivity and animation. The SVG specification is an open standard developed by the World Wide Web Consortium (W3C) since 1999. SVG images and their behaviors are defined in XML text files.

Note: Scalable Vector Graphics (SVG) is an XML-based vector image format for two-dimensional graphics with support for interactivity and animation.

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Note: A manifest file describes a package and maps its location on disk to a chrome URL. The manifest files usually have a .MF extension, or a .manifest extension in Windows.

Note: When executing scripts in an HTML page, the page becomes unresponsive until the script is finished. A web worker is a JavaScript that runs in the background, independently of other scripts, without affecting the performance of the page. You can continue to do whatever you want: clicking, selecting things, etc., while the web worker runs in the background.