 all its children, does not matter in which category they are, in one context. This can be desired in specific cases and in those cases categorized nodes in a tree is the way to go.

\section tree_structures_features Handy tree features

Now that we've shown how to build some example trees, we look at other features and advantages of the %Qtilities tree structure.

\subsection tree_parent_child_access Parent and child access functions

Any object can have multiple parents and can be attached anywhere in the