The Neo layout is overlaid on top of your existing keys. You use a modifier key to toggle the second layer.<p>More resources:<p>* Homepage (German): <a href="http://www.neo-layout.org/" rel="nofollow">http://www.neo-layout.org/</a><p>* Wikipedia: <a href="https://secure.wikimedia.org/wikipedia/en/wiki/Keyboard_layout#Neo" rel="nofollow">https://secure.wikimedia.org/wikipedia/en/wiki/Keyboard_layo...</a><p>* English introduction: <a href="http://pebbles.schattenlauf.de/layout/index_us.html" rel="nofollow">http://pebbles.schattenlauf.de/layout/index_us.html</a>