Are there any plans to add a "superscript" button to the tool bar - and is it possible to see what is superscripted in the editor instead of having to preview? Both of these features would be ultra helpful.
Could you tell me which Trademark symbol it is you're looking to use? Are you using the "Insert" and "Special Character" to access them? That looks like this:
From there, you can choose the TM, R, or C symbols, that are actually already set up to be superscript. They look like this:
However, if you're looking to create the superscripted TM on your own, you can add in the <sup> and the closing </sup> tags. When I was checking it out in my account, I noticed that the HTML editor didn't show what was being typed until after I finished the last ">" of the closing tag, so I could see how that could be disconcerting.
I would suggest perhaps putting in <sup> on both sides of the letters, then adding the " / " in afterwards. That worked better for me.