On 23 Jun 2005, at 07:43, Bjoern Hoehrmann wrote:
> The system identifier is considered optional. Tidy has some logic to
> determine whether it should specify one but I do not have the details
> handy. http://www.w3.org/QA/2002/04/valid-dtd-list.html should
> be clarified that the list is "incomplete" and informative.
I've just done that, thanks for the suggestion.