Comment

<!--……--> denotes a comment, and can appear anywhere outside other markup. Not part of any character data, it may or may not allow the XML processor to retrieve the comment text. The characters <, &, etc. may appear in it. Entity references are not recognized within comments. Avoid double hyphens (--) within comments for compatibility reasons.

<?xml version="1.0" encoding="UTF-8"?>
<bookslist>
   <!-- These are the books in Golden Bookstore. -->
</bookslist>