Step With Arrow Keys

Is it in some way possible to step with the arrow keys in select boxes and also select the value in each step?
The only way I can figure out as it is now is that you can step with the arrowkeys but you have to press enter to select the value, and when you do that you lose focus of the select box and have to press the mouse to select a new value…

Read more about it here
http://www.renoise.com/board/index.php?act…t=ST&f=6&t=1489

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