Tree Support Guide
Note : isTree table attribute was replaced by the new treeMode which can take the following values:
- MaterializedPath - the old isTree way, that needs to be unified in the new Tree handling way
- NestedSet - the most advanced tree mode support
- AdjacencyList - which is not yet implemented
NestedSet Support Guide
- NestedSet support
Working with the NEW nested-set support in Propel 1.3.
