You can enable autoscrolling and enjoy viewing the text without touching the keyboard - the text will be scrolled automatically. Click the button on the toolbar in the upper part of the window or press F9 on the keyboard. To disable autoscrolling, click the button or press F9 again.
You can adjust the speed of autoscrolling to your needs. To do this, move the speed slider to the necessary position with a mouse. The leftmost position is equal to the minimum speed and the rightmost position is the maximum speed.
Another way of changing the speed is pressing Ctrl+Page Up to make it one point quicker and Ctrl+Page Down to make it one point slower.