It offers a number of sample diagrams ... as well as productivity favorites like Gantt diagrams and pie charts. The left panel is where you put the text, and the right panel shows a preview ...

These run from \(2\) to \(5\). Initially the diagram is set up like the one above. The unit digits are now included by taking each number in turn \(36\) - we put a \(6\) in the \(3\) line.