<rng:group>
<rng:optional><rng:attribute name="inherit_id"/></rng:optional>
<rng:optional><rng:attribute name="inherit_option_id"/></rng:optional>
+ <rng:optional><rng:attribute name="groups"/></rng:optional>
</rng:group>
<rng:optional>
<rng:attribute name="page"><rng:value>True</rng:value></rng:attribute>