Text Practice - Toggle showing what letters we have typed
For the example this image will be used:
It can be seen that under the word I am currently typing it shows the correct letters I have typed so far up until the point I make an error (in this case I haven't). While it is useful for seeing what you are typing and where you made the error some people can be distracted by it. Personally, this could get in the way of trying to read ahead, especially on texts where there are lines with only several words on them.
Therefore, it would be nice to see a feature that allowed us to toggle this when we do not wish to have it there.