Dan, Thank you. I am afraid your research has confirmed my fear that this approach is not feasible especially because of my need for a monospaced font with the overstrike support. I can confirm your experiments with the math symbol combining fonts even with other monospace fonts I have on my Mac, but they are not even the arrow symbols I want; I want the ones I listed.
My only solution may be to compromise and instead of having overstruck alphabetic characters, I may need to pair up each character with its arrow. It will be uglier, but may accomplish my needs. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
