Last week, I posted some diagrams showing where apt and dpkg store their state files. I got a few suggestions about how to simplify them and make them more readable, and here's a tweaked version that includes those changes as well as some of my own.
This image is also available in svg and pdf formats. As before, the SVG probably won't work outside of Inkscape on Linux, and the PDF requires Acrobat Reader to display properly. If anyone knows how to convert Inkscape SVGs to PDFs that work everywhere, I'd be happy to give it a shot.
As before, I also made a slightly less flashy version that should be easier on printers, and perhaps easier on the eyes too: