Quote:
Originally Posted by tompe
I checked the 4.0 specification and a number is allowed (the value of name shoulc be CDATA) and the # reference is an URI and there numbers is allowed.
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The relevant place to check is whether or not @id and @name attributes (type ID and NAME) are allowed to begin with a number, which they are not. See
http://www.w3.org/TR/html401/types.html#h-6.2 for details. (XHTML, which is the relevant spec for EPUB, does not differ from HTML 4.0 on this point.)