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6. Links and Webs > Creating Searchable Documents

Creating Searchable Documents

Another extensible form of an HTML link that does not use the <a> tag is one that causes the server to search a database for a document that contains a user-specified keyword or words. An HTML document that contains such a link is known as a searchable document.

The <isindex> Tag (Deprecated)

Before it was deprecated in both the HTML 4 and XHTML standards, authors used to use the <isindex> tag to pass keywords along with a search engine’s URL to the server. The server then matched the keywords against a database of terms to select the next document for display. Today’s authors mostly use forms to pass information to the server and supporting programs. See Chapter 9 for details.


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