Chapter 15. CREATING AND RSS FEED

Understanding XML

HTML and XHTML are both effective languages for describing the structure of content on a Web page. CSS is useful for describing the formatting of the page. At times, however, you may need a language to describe the actual content of the page. The Extensible Markup Language, or XML, was created for this purpose.

Background of XML

Search engines have consistently become more powerful and better at returning relevant results, but the very nature of XHTML still presents limitations for them. Because XHTML does not give developers a way to define the underlying data on a page, search engines have no effective way to differentiate between uses of common words. For example, a search for the term firefly ...

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