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. link: The value of this element is a URL representing the feed or Web site. . title: This describes the image. If the feed is being rendered as HTML, the content of the title element may be used as the value of the alt attribute of the img element in HTML/XHTML. . url: The content of this element is a URL that specifies the location from which the image can be retrieved. The link element, a child of the image element, is required, although it seems simply to duplicate the content of the link element child of the channel element. The RSS 2.0 specification is not clear about the consequences should these two link elements contain different URLs. There are three optional child elements of the link element: . description: This contains a short description of the image. The specification suggests that it be used in the title attribute of the link in the corresponding HTML. . height: This contains the height of the image in pixels. . width: This contains the width of the image in pixels. The cloud Element The cloud element is a child element of the channel element. The attributes of the cloud element are used to specify a Web service that implements the rssCloud interface. A useful way to look on a cloud is as a Web application. A cloud acts as a central coordinator for subscriptions to an information feed. Instead of an aggregator polling a server at specified intervals (often hourly) the cloud (the coordinator) informs subscribed users when a change has taken place. A cloud element would appear similar to the following markup: The textinput Element The textinput element allows a user to enter text to be sent to a server-side process, such as a CGI script. Some people question the appropriateness of the textinput element, seeing that such functionality belongs more appropriately inside an individual Web page. . description: This contains a short description of the text input area. . link: This contains a URL which specifies a server-side process, for example a CGI script, to which the text entered by the user is sent. . name: This contains a name for the text in the text input area. . title: This contains the label for the submit button associated with the text input functionality. 125 RSS 2.0: Really Simple Syndication

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