I need the TM character. Looking through the documentation it is confusing the way the instructions are worded. It says to type T, then alt-backspace, then M, if I understand it correctly. But nothing works. Any ideas what I am missing? I'm using 2.91.0 enter link description here
For many special characters that can't normally be typed on your keyboard, it is much easier to just copy/ paste from some word processing app like Libre Writer and paste to blender.
In Windows, the ™ character is entered with ⌥ Alt + 0153
You can simply copy paste from Libre (or some other app) into Blender text object, change the font to something other than bfont and it should work.