Hiding/Showing the Section List
You can hide the Section List by clicking (not dragging) on the Move Bar between the Section List and the text editing area. This will collapse the Section List so the Move Bar is at the far left, giving you the full window for typing. While the List is hidden, you can still switch between Sections via keyboard commands (option-up/down arrow), and you can still manipulate Sections (rename, duplicate, etc.) via keyboard commands or menus. To make the Section List visible again, click on the move bar at the far left of the window.