I created this diagram (mainly by hand) for a client last year but don’t have permission to post a non-obfuscated version. As I’ve been talking recently on Stack Overflow about using GraphViz for casually tracking logic, I wanted a good sample. It is an accounting application and this shows how different buttons and menu options take you to other screens.
The image below was created by sizing a preview to fit at a non-readable text level and then taking a snapshot. The original PDF is 72KB and allows you to cleanly zoom in to see the flow.
Clicking the image will let you see a larger version but still obfuscated.