Okay, I have searched and searched and cannot find a way to do this. I have a Text Field with the Caption to the left of the Value. I want to underline the entire Value side of the Text Field and not the Caption. Is this possible?
Having selected the textfield in question, go to the Font tab. Click on the arrow next to the line "Currently editing Caption and Value"; select "Edit Value" and then click the Underline button.
