In Atlantis you can perform the following operations using the mouse wheel:

1. Wheel scroll up/down — scroll the document window several lines up/down.
2. Shift+Wheel scroll up/down — scroll the document window one page up/down.
3. Ctrl+Wheel scroll up/down — grow/shrink zoom by 10%.

Also, the wheel of most computer mice can be not only scrolled up or down but clicked too as an ordinary button. If the wheel of your mouse is clickable, or your mouse has a middle button or another button that substitutes for the middle button, you could click the wheel or the middle button of your mouse to scroll the document in any direction (including horizontal and diagonal). To do this, hold the wheel or the middle button down, then move the mouse pointer to specify the scrolling direction and speed. Release the wheel or the middle button to stop scrolling.

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