TreeSelect

TreeSelect[tree,crit] picks out all subtrees treei of tree for which crit[treei] is True.

TreeSelect[tree,crit,n] picks out the first n subtrees for which crit[treei] is True.

TreeSelect[tree,crit,levelspec,n] picks out subtrees on levels specified by levelspec.

TreeSelect[crit] represents an operator form of TreeSelect that can be applied to a tree.

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