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<title>No Duplicate Types</title>
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<td valign="top" class="NAME">No Duplicate Types</td>
<td valign="top" class="COMPATIBILITY">&nbsp;</td>
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<td colspan="2" class="divider"><img src="dwres:18084" width="100%" height="1"></td>
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<td valign="top" colspan="2" class="description">&nbsp;
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<td colspan="2" class="DESCRIPTIONTITLE">Text from specification</td>
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<p>The same name must not appear more than once in
a single mixed-content declaration.</p>

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<td colspan="2" class="CLEARSEPARATION">&nbsp;</td>
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<td colspan="2" class="DESCRIPTIONTITLE">Explanation</td>
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<p>Don't list the same element type name more than once
in the same mixed-content declaration.</p>

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<td colspan="2" class="CLEARSEPARATION">&nbsp;</td>
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