files/pl/mdn/user_guide/index.html


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---
title: MDN user guide
slug: MDN/User_guide
translation_of: MDN/Tools
translation_of_original: MDN/User_guide
---
<div>{{MDNSidebar}}</div><p>The Mozilla Developer Network site is an advanced system for finding, reading, and contributing to documentation and sample code for Web developers (as well as for Firefox and Firefox OS developers). The MDN user guide provides articles detailing how to use MDN to find the documentation you need, and, if you wish, how to help make the material better, more expansive, and more complete.</p>
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