19 lines
347 B
Plaintext
19 lines
347 B
Plaintext
<grammar xmlns="http://relaxng.org/ns/structure/1.0">
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<start>
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<ref name="top"/>
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</start>
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<define name="empty">
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<empty/>
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</define>
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<define name="top">
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<element name="top">
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<choice>
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<ref name="empty"/>
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<element name="a">
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<text/>
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</element>
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</choice>
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</element>
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</define>
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</grammar>
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