Deterministic toolbelt rows switching

[Xecutor]

At the moment in order get item from toolbelt with hotkey reliably you need to look at it (or remember in which state it is).
Because result of pressing 'switch rows' key depends on current state, obviously.
It would be supernice to have 'switch to 1st row' and 'switch to 2nd row' hotkeys.
Then with two key presses you can reliably select desired item without looking at current state of the toolbelt.