<?xml version="1.0"?>

<xs:schema
targetNamespace="http://www.ruleml.org/0.91/xsd"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns="http://www.ruleml.org/0.91/xsd"
>
<!--
	content model:
	(  slot*, ( arg, arg, slot )?  )
-->

	<xs:redefine schemaLocation="restriction.xsd">
		<!--
			restrict from "1 or more" to "exactly 2"
		-->
		<xs:group name="Atom.content">
			<xs:sequence>
				<xs:element ref="slot" minOccurs="0"/>
				<xs:sequence minOccurs="0">
					<xs:element ref="arg" minOccurs="2" maxOccurs="2"/>
					<xs:element ref="slot"/>
				</xs:sequence>
			</xs:sequence>
		</xs:group>		
		
	</xs:redefine>
	
</xs:schema>