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I was playing around with DOM DocumentFragments recently, in JavaScript, seeing what I could make with them. Roughly speaking, a DocumentFragment is a lightweight container that can hold DOM nodes. It's part of the DOM 1 specification and is supported in all modern browsers (it was added to Internet Explorer in version 6). If you take a bunch of DOM nodes and append them to a fragment then you can simply append the fragment to the document. As it turns out: A method that is largely ignored in modern web development can provide some serious (2-3x) performance improvements to your DOM manipulation.