00-load.t - Can we use the class without explosion?
10-demo.t - The shortest possible use case (100% defaults)
20-demo.t - Reproduction of http://rick.measham.id.au/pdf-api2/
            But using PDF::TextBlock objects
30-demo.t - Demonstration of bolding every other word in a text block.
            This is not easy via any other CPAN library I'm aware of.