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Please refer to the errata for this document, which includes some normative corrections. See also differences between this and last published draft and this document. Unlike traditional user interface widgets (e.g., buttons, input boxes, toolbars, etc.), widgets as specified in this document are full-fledged client-side applications that are authored using technologies such as HTML and then packaged for distribution.
Examples range from simple clocks, stock tickers, news casters, games and weather forecasters, to complex applications that pull data from multiple sources to be "mashed-up" and presented to a user in some interesting and useful way.
The second half, which starts with the section titled "Steps for Processing a widget package", defines the steps required to process a widget package as well as the expected behavior of a user agent as it processes the packaging format, the configuration document, and attempts to find localized content.The configuration document is an XML vocabulary that declares metadata and configuration parameters for a widget.The steps for processing a widget package describe the expected behavior and means of error handling for runtimes while processing the packaging format, configuration document, and other relevant files.The following list of terms is not exhaustive; other terms are defined throughout this specification.an end-user's conceptualization of an interactive single purpose application for displaying and/or updating local data or data on the Web, packaged in a way to allow a single download and installation on a user's machine, mobile phone, or Internet-enabled device.