How to use help menu

I just got started with Codea yesterday, and I have a problem. I used the eye symbol to bring up the built- in reference, looked up conditionals, found out what I was doing wrong with IF statement syntax, and fixed my code; but now the reference is stuck on conditionals. I can search for other topics (by dragging down the window the reference is in) but I can’t figure out how to get back to the list of topics. If I close the reference window and hit the eye symbol, it reopens on conditionals. How can I get the “table of contents” view back?

You can slide the reference to the right or left. If you want to close the reference, tap the < at the top left of the editor page.