> the class looked very simple, like Point, and the diagram looked machine generated, but it was just a list of key/value pairs

It's not a class diagram. It's a try to create an overview of all possible Moose attributes for this doc:

http://search.cpan.org/~flora/Moose-2.0007/lib/Moose/Manual/Attributes.pod#___top

Cause in there docs you can't see them all on a single page. And on my diagram you can + a code snippet + some notes.

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> pdf not required, so I reiterate, you should post code :)

The pdf was typeset in LaTeX, using Tikz. You can get the source here:

http://www.live-wtr.ru/Perl/moose.txt

The real file extension is .tex

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