Three panes give you information and control over your map. The My Data describes the size of your map and at what level within it you are currently focused. It also shows you how many cloud operations are queued up for processing.
The Display Preferences pop up view (shown above) lets you alter general and specific aspects like line thickness or color of an idea.
The choice between precede and follow lets you tell Seriously whether a new idea will appear above or below your current one, or at the top or bottom of the list of child ideas.
NOTE: This choice can also be invoked by tapping the PERIOD key, which will toggle between these two options.