Doubt about Choice of lists

  Hi people,
I have a schema with the following structure:

<element name="demonstrativosRetorno" minOccurs="0">
<complexType>
<choice>
<element name="element1" type="type1" maxOccurs="30"/>
<element name="element2" type="type2" maxOccurs="30"/>
<element name="element3" type="type3" maxOccurs="30"/>
<element name="element4" type="type4" maxOccurs="30"/>
</choice>
</complexType>
</element>

what it means?
I can have a list of elements, all of the same type?
or I can have a mixed list?
I guess the first one is the right option, I´m right?

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Luis Enrique PettinariAcuna

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