Why does each box in a UML state diagram have three sections?

Question

I noticed in this example that each box is divided into three sections, but only two sections are ever used. Why not just divide it into two sections then?

UML Tutorial - State Diagrams

Answer 1

Having checked my copy of UML Distilled by Fowler-Scott, I can only conclude that the use of different sections is not significant. As you say, why not just use 2 sections, and I'd agree.

I would place more importance on what the diagram is trying to show and why that is important than on the actual representation used on the diagram itself.

Answer 2

Usually, there are only one or two sections. One for the name and a second one (often omited) for actions/activities.