- smooth animation,
- customized and enhanced scrollbar,
- menu-level with different background (colors or/and images).
- opening or closing a directory:
- is done by a smooth animation transition,
- then the tree image moves to fit the best viewpoint, if needed.
- each action performed with the scrollbar is synchronized with the tree image
- each directory level may have its own background color or/and background image. This enhances the tree structure rendering.