UUnderline text.
Allowed attributes: (none)
Child elements: A, Action, B, Br, Color, Fontface, ForAll, HSpace, I, Image, Loop, Sub, Sup, Switch, U, URL, Value
Currenty it doesn't work with margin protrusion.
<Record element="data">
<PlaceObject column="1" row="1">
<Textblock width="18">
<Paragraph>
<U><Value>Underlined text</Value></U>
</Paragraph>
</Textblock>
</PlaceObject>
</Record>