I have also tried to find work-arounds for the underling placement and thickness. A recent problem was underlines and superscripts on date day postfixes (23rd, 1st, 17th etc...). The client wants a phrase with the superscripts included to be underlined as well. Unlike most applications, when FP superscripts, and it is underlined, the underline is also superscripted... not good. Especially when the paragraph contains variables. The only work-around I could come up with is attached.
It uses 2 text boxes. The first is the 'top' layer, which contains one paragraph with a variable (first name) and part of the text underlined... but NOT the superscriped part. Then made a copy of this text box and called it 'underlined layer'. The key was changing the font color of everthing but the underline at the superscript portion to white and making it the bottom layer. Seems to work.
Thanks to all the regulars and hope this helps someone else in a similar situation.
Gregg test_Underline.pdf test.txt