This text element SHALL have exactly one [1..1] text.mediaType, which SHALL be one of the following values: ”text/plain”, “application/pdf”, or “text/rtf”
If text.mediaType=”text/plain”, this text element SHALL have exactly one [1..1] text.representation=”TXT” and the value of the text element SHALL contain only plain text content with no markup, and SHALL NOT contain attachments, inline images or other media elements (IE: text.representation=”B64”)
If text.mediaType=”text/rtf”, or “application/pdf” this text element SHALL contain exactly one [1..1] reference element with reference.value referencing the URL of the content file