Base64 encoded image object.

 <xs:complexType name="tImg">
     <xs:attribute name="src" type="xs:string" use="required" />
     <xs:attribute name="region" type="xs:string" use="required" />

src: An identifier that refers to the contentId attribute of the content element.

region: Region for displaying the image. It has the same value as the id attribute of the tRegion which is a child of the tLayout complex type. The value could be "Image" or "Text".