CHAPTER 3 WEB VOCABULARIES You (Web hosting isp) can find
CHAPTER 3 WEB VOCABULARIES You can find this document saved as marstransitional.htm with your code download. The document begins with an XML declaration: XHTML documents don t require an XML declaration, but it s recommended that you include one. If you include the declaration, web browsers can check that the document is well formed. Immediately following the XML declaration, a DOCTYPE declaration tells the web browser exactly what kind of document you re writing: The document root contains a reference to the XHTML namespace: The markup is well-formed XML, but it still contains some presentational information in particular, align and bgcolor attributes. You can download this example, called marstransitional.htm, in the Source Code area of the Apress web site (http://www.apress.com). If you open the file in a web browser, you should see something like the screen shot shown in Figure 3-1. Figure 3-1. The marstransitional.htm page displayed in Internet Explorer The XHTML transitional DTD can be useful if you need to support older browsers. Otherwise, you should try to use the strict or XHTML 1.1 document types.
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