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Christopher R. Maden wrote: > I concur (though you'd know better than I). I was actually a little > surprised to note that (foo ?) isn't legal, not even in SGML (see <URL: > http://crism.maden.org/consulting/pub/sgmldefs.html#[130] >). I had always thought this was a typo in the spec (missing a 'ts' between 'generic identifier' and 'occurrence indicator'). As it turns out, it's specified this way to keep the grammar LL(1); otherwise there would be an ambiguity at '+' between occurrence indicators <!ELEMENT x - - FOO + > and inclusion exceptions <!ELEMENT x - - FOO +BAR> --Joe English jenglish@f...
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