This article covers the Legacy editor. Lessons built in the New editor work differently. To write and format lesson content in the New editor, see Inserting content with the slash and plus menus. New to the difference between the two? Start with The new lesson experience.
The toolbar
Open the lesson from My Library. The Legacy editor shows the lesson as a list of blocks, with the Outline down the left.
H1, H2, H3 for headings.
B and I for bold and italic.
Bullet and numbered lists.
Code for a code block.
Table to insert a table.
An image button, a drawing button, and inline and block maths.
Click Save when you are done.