Ocassionally, when dealing with Xml messages from third party systems, your Biztalk solution might need to deal with mixed content. A classic example of the mixed content is the HTML as in -
<P>Here goes some <b>bold</b> text</P>
Biztalk allows handling these kind of messages when defining the schemas. To do this, all your have to do is set the mixed attribute of the Record to true. Setting this attribute ensures that the record can contain text as well as any child nodes within it.
Explanation about the mixed property can be found here.