>> As I have a huge collection of old stuff, here I attach which clases was in
>> 3.2 and was ripped or changed later
>> In the past my idea is to have some  on web like we made for 3.10
>>
>> http://ftp.squeak.org/Experiments/3dot8/
>> http://ftp.squeak.org/Experiments/3dot9/
>> http://ftp.squeak.org/Experiments/3dot10/
>>
>> Later I extent this in my
>> http://squeakros.org/4dot4
>> http://squeakros.org/4dot5
>> The idea is with a recursive dnu mechanisms you go back from XdotY until you
>> found the class.
> 
> This is a really interesting idea.
> 
> Backward compatibility is a hard problem to solve, but it is a really
> interesting challenge. I love being able to explore old Squeak images
> and projects, it is like having a reference library for ideas and experiments.

+1

Stef