<element name=“number” xmlns=“relaxng.org/ns/structure/1.0”>
<attribute name="val"> <list> <oneOrMore> <choice> <value>1</value> <value>2</value> <value>3</value> </choice> </oneOrMore> </list> </attribute> <text/>
</element>
<element name=“number” xmlns=“relaxng.org/ns/structure/1.0”>
<attribute name="val"> <list> <oneOrMore> <choice> <value>1</value> <value>2</value> <value>3</value> </choice> </oneOrMore> </list> </attribute> <text/>
</element>