All the mission functions can be controlled with a three button mouse.

Mouse Action
CLICK on a button or tool to activate it.
HOLD to Look (Rotate head)
HOLD to Rotate active tool
HOLD to Zoom
CLICK to apply tool
SCROLL to change action of a tool.

If you don't have a three button mouse then the following keyboard keys can be used to modify the function of your mouse.

Keyboard Action
SHIFT Zoom
CONTROL Rotate active tool
SPACE Apply tool
Z X Change action of tool
Q E Throttle

The following keys can also be use.

Keyboard Action
Look (Rotate head)