Quite often we have to drag and drop items in a tree structure. If the tree
is not so long, it is ok. How about the very long tree mixed with folder and
The solution is double tree with the same root.
Example can be found in Tablane browser
If you open the collection manager/(from collections menu). The converted
IE's favorites is presented in two trees side by side. You can drag and drop
between the trees.
Both trees share the same data tree.