Thank you for playing! Yeah, the correction mechanic is a bit complicated. It's
- Backspace (using the backspace key) to the position you want to clear out
- Put in the correction stripe (using the tab key). This should insert the stripe in front of the type head
- Type the same wrong letters you wish to clear
So, for example, if you typed "A quick brown dog..." and want to change "dog" to 'fox", you will need to backspace the caret to the "d" in "dog", put in the correction stripe, and type "dog" once again. The "dog" should be now cleared, and you can type fox in the correct position again. Hope this explained how it works.
(Appearently this is how people back in the day made corrections on real typewriters)
If you have time, feel free to come to the game again and enjoy the full story!