👈 On the left (if you're on a desktop or laptop) or above ☝️ (if you're on mobile)—is the table of contents for this lesson.
Try jumping to a few other pages, and then come back to this page.
We'll wait here while you do that.
👈 ✅ Do you see the checkmarks next to each page title?
These change colour whenever you click the Next button on a page. (They don't change when you use the table of contents.)
Click Next now and see for yourself.
