The Main menu provides access to the main sections of the interface. In our case, the computer installed on the drill have no keyboard or mouse. All interface management is performed with the joystick installed on the operator's hand support.
Main menu represent a group of selectable buttons each of which provides an opportunity to open a new screen with a set of features corresponding to the desired section.
To operate the menu you need to use the finger joystick on "UP" and "DOWN" direction for setting the focus (highlight) on the desired button and then using "Select" direction to submit your choice.