To Pan use arrow keys, or left mouse button while moving the mouse in each direction. To Zoom use Page Up Page down, or "Shift" key while moving the mouse up and down. To Re-Size use "Ctrl" while using "Page Up", "Page Down" or "Ctrl" key while moving the mouse up and down. To toggle for Optial Speed Mode on slower processors use "A" key or "F2" key For help options use "F1" key.