<xsd:group name="containerElements"><xsd:annotation><xsd:documentation><type>Group</type><name>containerElements</name><comment>The group containerElements lists all the elements that are containers</comment></xsd:documentation></xsd:annotation><xsd:choice><xsd:group ref="speechSection"/><xsd:group ref="HTMLcontainers"/><xsd:element ref="container"/></xsd:choice></xsd:group>