What is "xbl"

XBL (XML Binding Language) is an XML-based markup language used to declare the behavior and look of XUL- widgets and XML elements. Development of the XBL specification was abandoned by the W3C in 2012.

XBL was developed by the Mozilla project for use in the Mozilla Application Suite; the language is not currently described by any formal standard and is thus proprietary to Mozilla, with the only implementation being the Gecko layout engine. XBL 2.0 is the latest version of XBL.

XBL may refer to:

• Exploits Block List
• The Exclusive Bus Lane in the Lincoln Tunnel that carries hundreds of buses to the Port Authority Bus Terminal and other locations in Manhattan every weekday morning.
• eXtreme BL linearity, a term used for a high excursion loudspeaker motor covered by US Patent 7,039,213
• Xbox Live, an online multiplayer gaming and digital media delivery service created and operated by Microsoft Corporation
• XML Binding Language, a markup language developed by the Mozilla project