A lesson is made of pages. The outline down the left is how you move between them and reorder them.
Using the outline
Click a page to jump to it. Drag to reorder. Add Page at the bottom adds another.
Why pages matter for marking
The auto-marker reads everything above a question on the same page. So a passage, a diagram or a worked example belongs on the page with the question that depends on it, not on the page before.
