Equivalent of Empty element in XSD

["Sudheshna Iyer" <sudheshnaiyer@hotmail.com>]

Team,

What is the equivalent of the following snippet of DTD in XSD:
<!ELEMENT Ext EMPTY>

The following doesn't seem to be working:
	<xs:element name="Ext">
		<xs:complexType/>
	</xs:element>

Can any body suggest anything otherr than the above?

Thank you.

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