8 lines
192 B
XML
8 lines
192 B
XML
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<!DOCTYPE doc [
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<!ELEMENT doc (#PCDATA)>
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<!ATTLIST doc a NOTATION (n1|n2) #IMPLIED>
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<!NOTATION n1 SYSTEM "http://www.w3.org/">
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<!NOTATION n2 SYSTEM "http://www.w3.org/">
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]>
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<doc></doc>
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