Dear Pharoes,

I see a lot of tree applications in Pharo, like Nautilus, GLM, FastTable,��Spec, etc��

but they have their own tree structures.��not common��for others.

can you give some example?
I do not think that we have different tree structures so I'm curious.

This is probably because the TreeWidget requires that we wrap items.

I just ��looked��into Dolpin Smalltalk , it has a standard TreeStructure class used anywhere.

Why does not have a standard Tree Structure in Pharo?

What do you mean that a Tree Structure?

Best regards!

Liang

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