<u>Shortcuts for trees</u>:
<b>Arrows up,down</b> - move between items.
<b>Page up,down</b> - move quicker.
<b>Enter, Arrow right</b> - enter subtree.
<b>Alt arrow Left</b> - Current position.
<b>Alt arrow Right</b> - Number of items in current level.
<b>Arrow left</b> - go back one level up.
<b>Control R</b> - reload level.
<b>Escape</b> - Exit tree.