I faced with difficulties, I can’t understand and so repeat this steps in the Basic Recorder:
In the typing menu that appears there will be a list of keys - click Back - what is mean Back key? is it Backspace?
Back stands for backspace
This will populate the value with [k(back)], which is a keyboard input
Copy paste it so the value is [k(back)][k(back)] - this deletes the two letters in ‘hi’