There may be a work around available, depending on the letters&numbers needed in subscript/superscript. JMP is capable of displaying unicode characters. To display a specific unicode character, determine the code for it and then preceed it with "\!U". For example, water is H2O, but it would be best to display it with a subscript 2. Unicode for subscript 2 is "2082', so to get that effect, I can replace the 2 in H20 with "\!U2082". Here is an example:
newwindow("Water",panelbox("H\!U2082O"));
Consider modifying the fonts in preferences to one that includes unicode characters if the code displays a box instead of the desired subscript 2 symbol. Unfortunately, this solution does not work for all letters and numbers, since not all letters and numbers have a unicode subscript/superscript version.