You can turn a concept (a bubble in the map) into a list by dragging another concept over it.
Drag one concept onto another to create a list (pic. 1 and 2)
Pic. 1
Pic. 2
Hierarchical lists or outlines
The lists can be hierarchical - if you move the dragged concept slightly to the right under another one in the list, it becomes indented, as a subtopic or subheading. The hierarchy can be as deep as you need. (pic. 3)
Pic. 3
Custom lists
You can create custom lists as needed. I.e., you don't have to choose only from the suggested topics. Simply type anything you like and click "+" button at the end of the input line or hit enter. Then start dragging subtopics over the newly created concept.