Sven wrote:

Euh, I want to fix some of them !

Good, that was the idea :) I was inspired by Doru's humane assessment primer.

Could you express this query in executable code ? I am guessing you did this with Moose ? Can it be done in plain Smalltalk ?

I opened a Moose to take a look at the Mondrian examples, then copied that. This is the version that runs in both Squeak and Pharo. Open a workspace, Print-it on Unclassified new byAuthor Unclassified new byPackage This package intentionally contains some unclassified methods :)