Click on the Arrows to adjust values.
Hotkeys -
up: Increases height
down: Decreases height
right: Increases width
left: Decreases width
Shift: Decreases material price
Space: Increases material price
Plus "+": Increases Copies/Quantity of prints
minus "-": Decreases Copies/Quantity of prints
"*" : Increases 'Increment' (check NumLock)
"/" : Decreases 'Incrament' (check NumLock)
"." : Increases material price + $0.50 (check NumLock)
"Q" : Resets Calculator