It’s a handbook of water management for engineers, architects, and plumbers. And it’s gorgeous!
“To achieve a retro effect, try drawing your lines with the Brush tool and then cross-hatching back over them with the Eraser tool.”
Not a UI/UX dream but excellent emulations. Catches stuff others don’t.
Check out these drawings made with “Paper” app on the iPad.
For those of you playing along at home, you no longer need to plug the vulnerability manually.