<data type="boolean"/>
</element>
</optional>
- <oneOrMore>
+ <optional>
+ <element name="mp:torus">
+ <attribute name="url">
+ <data type="string"/>
+ </attribute>
+ </element>
+ </optional>
+ <zeroOrMore>
<element name="mp:virtual">
<optional>
<attribute name="route">
</element>
</oneOrMore>
</element>
- </oneOrMore>
+ </zeroOrMore>
</define>
<define name="filter_z3950_client">
<attribute name="type">