http://docs.oasis-open.org/wsdm/2004/12/mows/wsdm-mows.xsd
complexType MessageContentType

{http://www.w3.org/2001/XMLSchema}anyType
    {http://docs.oasis-open.org/wsdm/2004/12/mows/wsdm-mows.xsd}MessageContentType

Model

<...  (any attribute from any namespace other than http://docs.oasis-open.org/wsdm/2004/12/mows/wsdm-mows.xsd)>
Size?, NotIncluded | Text | Binary | Xml, (any element from any namespace other than http://docs.oasis-open.org/wsdm/2004/12/mows/wsdm-mows.xsd)*
</...>

Prohibited substitutions (block)

allowed to substitute with an xsi:type attribute with any derived type

Content Type

element-only content, not nillable.
This type can be derived by extension or restriction.

Usage

MessageInformationType/Message