Moving from Question to Question

Next to the sample question the tutorial explains:
After answering Question Number 2, use the Toolbar buttons Previous and Next to practice navigating back to Question Number 1 and then forward to Question Number 2. You may also use the left or right arrow keys on the keyboard to move from question to question.
Click Next or use the right arrow key to display a pop-up screen that indicates where the question numbers and clock are displayed.