<xsd:group name="FormatElementsGroup">
<xsd:choice>
<xsd:element ref="pubs:EmphasizedText" minOccurs="1" maxOccurs="1"/>
<xsd:element ref="pubs:Superscript" minOccurs="1" maxOccurs="1"/>
<xsd:element ref="pubs:Subscript" minOccurs="1" maxOccurs="1"/>
</xsd:choice>
</xsd:group>
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