September 2004
Intermediate to advanced
712 pages
24h 45m
English
Despite a long history in HTML of using comments for tasks like Server-Side Includes (SSI) and for hiding JavaScript code and Cascading Style Sheets, using comments for anything other than human-readable notes is generally a bad idea in XML. XML parsers may (and frequently do) discard comments entirely, keeping them from reaching an application at all. Transformations generally discard comments as well.
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