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XUL which is pronounced zool stands for <b>X</b>ML <b>U</b>ser Interface <b>L</b>anguage is a Mark-up language used primarily in Mozilla applications. It allows for XUL is used to define what the creation of feature rich visually appealing cross platform applications user interface will look like such as buttons and other widgets but it is not used to be easily created and maintained for online or offline usedefine how those item will look.

XUL is an [http://en.wikipedia.org/wiki/Xml XML] based language and thus has a similiar set of advantages. One of the advantages biggest being that it that its completly cross-platform. It accomplishes this by defining the locations and type of each widget but not defining what it will look like. Because of this the user-interface will use the systems native componets to build the GUI and thus looks like a native application. XUL also allows for the insertion of inserting other XML languages into it such as [http://en.wikipedia.org/wiki/Xhtml XHTML], [http://en.wikipedia.org/wiki/MathML MathML] and [http://en.wikipedia.org/wiki/Svg SVG]. Also because of its structure all the GUI componets and tezt is localized structure which makes it can be easily translated easy translate into other languages.

==Suported Common Usages==* Chrome* Firefox Extension's GUI ==Supported Technologies==

=resources=Technical Details (Technologies XUL relies on)=====eXtensible Bindings Language ([[XBL]])===* Allows for additional, tutorialscustom tags* Can provide new event handlers and methods for existing elements ===Overlays===* Used to customize applications* Gets around NPL & MPL licensing ===[[XPCOM]]===* A means of calling upon the underyling C/C++ libraries for heavylifting ===XPInstall===* Provides an install tool for distributing XUL applications =Sample Code= <?xml version="1.0"?> <?xml-stylesheet href="chrome://global/skin" type="text/css" ?> <window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" align="center" pack="center"> <description>Is XUL cool or what?</description> <radiogroup> <radio id="yes" selected="true" label="Yes!"/> <radio id="no" label="No wai"/> </radiogroup> <button id="dpsbutton" label="DPS909 is fun" /> </window>Paste the above sample code inside your favourite editor and save it with a file extension of .XUL. Open the file in a Mozilla-based browser to view it. * Line 1: Declares that it is an XML file* Line 2: Used to reference the stylesheets. In this case, examplesthe global/skin chrome directories' default global.css file is used. global.css is used to declare all of the XUL elements.* Line 3: Describes a new window to be drawn, etcusing the namespace http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul. All children of this window are XUL.* Line 5: Description tag is like a label, but can wrap many lines.* Lines 6-9: Describes a radio button group.* Line 10: Draws a button.  =Example Applications=*[http://faser.net/mab/chrome/content/mab.xul Mozilla Amazon Browser (MAB)] - Rich web application that allows for searching of Amazon's content across their 6 websites (US, Canada, UK, Japan, Germany and France). Can be used through the web or [http://faser.net/mab/download/mab-142.zip downloaded] to the desktop.*[http://www.hevanet.com/acorbin/xul/top.xul XUL Periodic Table] - Demonstrates many of the visual capabilities of XUL. =Newsgroups, Mailinglists, IRC Channels=*[news://news.mozilla.org/mozilla.dev.tech.xul mozilla.dev.tech.xul newsgroup] (alternatively, use [http://groups.google.com/group/mozilla.dev.tech.xul Google Groups])*[https://lists.mozilla.org/listinfo/dev-tech-xul dev-tech-xul mailinglist] (manually use [mailto:dev-tech-xul@lists.mozilla.org dev-tech-xul@lists.mozilla.org])*[irc://irc.mozilla.org/#xul #xul on irc.mozilla.org] =Resources=*[http://www.mozilla.org/xpfe/xulref/ XUL Programmers RefrenceReference]

*[http://www.xulplanet.com/tutorials/xultu/ XUL tutorial] =Examples=*[http://wiki.mozilla.org/XUL XUL new features and enhancements]