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XML in a Nutshell, 3rd Edition
book

XML in a Nutshell, 3rd Edition

by Elliotte Rusty Harold, W. Scott Means
September 2004
Intermediate to advanced
712 pages
24h 45m
English
O'Reilly Media, Inc.
Content preview from XML in a Nutshell, 3rd Edition

Robots

In HTML, the robots meta tag tells search engines and other robots whether they’re allowed to index a page. Walter Underwood has proposed the following processing instruction as an equivalent for XML documents:

<?robots index="yes" follow="no"?>

Robots will look for this in the prolog of any XML document they encounter. The syntax of this particular processing instruction is two pseudo-attributes, one named index and one named follow, whose values are either yes or no. If the index attribute has the value yes, then this page will be indexed by a search-engine robot. If index has the value no, then it won’t be. Similarly, if follow has the value yes, then links from this document will be followed. If follow has the value no, then they won’t be.

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Publisher Resources

ISBN: 0596007647Errata Page