Have buttons for special characters

As you type, it'd be nice if the special character buttons were to pop up when needed and you just press the number next to the character. It keeps things moving quickly, especially when you're writing as you listen. https://www.linguno.com/ has done this well. 
 

Hi tenletters, 

We appreciate your suggestions as we are always working on improving the course. I have passed your comments on to our Product Development team for their consideration.

Kind Regards.