When you set a numeric control to any mode other than indicator mode, you can change its value from the keyboard or with the mouse.
You can operate a numeric control from the keyboard in the following ways:
You can operate a numeric control with the mouse by clicking on the up/down arrows to change the value of the control.
If the control mode of a numeric control is hot or validate, a commit event is generated when you press the up or down arrow keys, or when you type in a new value and then press the <Enter> or <Tab> key or click on another object with the mouse.