Even if I know the program can not ask me scorciature with keys.
Let me explain by going to the Preferences menu under "general options" no "buttons / controls and from here you can associate an action for each key on the keyboard.
One of these is the range that I use a lot (for each film I have to constantly adjust), but the problem is that every time I press the button for a range of salt me 50 points, the same is shrinking.
Instead going in the menu with the mouse has a precision of one unit.
Do you know how to set the amount of value even when using shortcut keys?