Subscripts of superscripts and superscripts of subscripts is working for me (see below). I am not sure why whey won't work for you. 

Regarding finding and replacing math characters, the second video at http://www.texmacs.org/tmweb/home/videos.en.html shows that searching within a math environment searches through all math environments in the document, but so far I have only been able to search for the standard alphabetic characters. I can't find a way for instance search for instances of Greek letters or integral signs. 

On Wed, Jun 24, 2015 at 12:38 PM, Michael Snarski <address@hidden> wrote:

Hi,

When I put a subscript on a superscript, or a superscript on a subscript, it does not display, even though it is saved in the .tex file. Is there any way to force them to display?

Also, is there any way to find and replace math characters? 

Best regards,

Michael