The saying goes: a picture is worth a thousand words. When dealing with diagrams, the same point is true: a good diagram saves a thousand words.
In this section, you will draw your first diagram. We'll build the diagram from scratch to a finished product, and along the way explain what you need to do. If you follow each step without deviation, you will get a good background on a lot of the possibilities that are present in the OmniGraffle program. It is thus better to experiment after the diagram is done, rather then when you are working your way through the various steps.
Our first diagram is going to describe the workflow for publishing information on an imaginary company's web page.
To set the stage we need to introduce some ...