View - 'V' key + left mouse button + mouse move
Zoom - 'Z' key + left mouse button + mouse move
Spin - 'S' key + left mouse button + mouse move
Fine Aim - CTRL + left mouse button + mouse move
Aim - Left mouse button + mouse move
Shoot - Right mouse button + mouse move or space + mouse move
Move - 'M' key + left mouse button + mouse move