I added an article at the Wiki about Modified Preorder Tree Traversal, a way to store parent/children relationship.
I don't know how good my english is (I am from Brazil, and speak portuguese), and I extracted the code from an app I am doing. Could someone "proof-read" it please, and if any errors are found, please let me know? Many thanks, -- Julio Nobrega - http://www.inerciasensorial.com.br
