Undeclared elements error

John Cowan cowan at locke.ccil.org
Thu Sep 17 21:44:14 BST 1998

Richard L. Goerwitz III wrote:

>   1) What if I use an element in a content model and I don't
>      declare it?

>From clause 3.2:

# At user option, an XML processor may issue a warning when a
# declaration mentions an element type for which
# no declaration is provided, but this is not an error.

>   2) What if I declare an element in a content model that I
>      don't use in any content model (and the element isn't the
>      root element)?

I know of no context, XML or otherwise, where it is an outright error
to declare something and not use it.  At most, that provokes a warning.

	We *mention* "our vast nuclear arsenal" so that
	we won't have to *use* it.
		-- Douglas Hofstadter on the use/mention distinction

John Cowan	http://www.ccil.org/~cowan		cowan at ccil.org
	You tollerday donsk?  N.  You tolkatiff scowegian?  Nn.
	You spigotty anglease?  Nnn.  You phonio saxo?  Nnnn.
		Clear all so!  'Tis a Jute.... (Finnegans Wake 16.5)

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