A heading line represents a topic in the outline. Any line that is not a heading line is a body line.
Body lines belong with the preceding heading line.
This is the body, which says something about the topic of food. This is the body of the second-level header. This could have a body too, with several lines. A heading line together with all following body lines is called collectively an entry . A heading line together with all following deeper heading lines and their body lines is called a subtree .