That and this: allow me to enter the keys "control" and "option" in my shortcuts. As of now, I can't enter this combo which I use constantly during painting. Little known secret for over a decade: this key combo when pressed while using a brush combined with moving your cursor up and down adjusts the hardness while side to side adjusts size. So making small adjustments to your brush on the fly becomes effortless, and addictive! You have no idea how efficient I am with this little known shortcut by itself!