The Status Line
Learning to read error message is a crital part of programming. We'll cover them. But, hitting one because you made a typo in a tutorail is a waste of time, energy, and motivation.
You may have noticed the "Status" line in the Code Runner on the previous pages. It's designed to eliminate typos by highlighting them as soon as they occur and show you what character to use.
If you've ever entered a huge block of tutorial code only to be hit with an indecipherable error because of an unrelated typo, you know why I built it.