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<!--Inability to resolve a notation should not be reported as an error-->
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<!DOCTYPE doc
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[
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<!ELEMENT doc EMPTY>
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<!NOTATION not1 SYSTEM "a%a&b�<!ELEMENT<!--<?</>?>/\''">
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<!NOTATION not2 SYSTEM 'a
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b"""'>
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<!NOTATION not3 SYSTEM "">
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<!NOTATION not4 SYSTEM ''>
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]>
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<doc/>