InformationPitch moment coefficient. This determines pitch stability and control authority and is dependent on the relationship between the center of lift and to the center of mass. Notice how it changes with AOA and speed? Notice how the stock game's CoL tool doesn't reflect this reality? That's right, it's garbage, don't use it!

The pitch moment coefficient determines the pitch stability and responsiveness of your aircraft. The steeper the downward slope the more stable, but the slower it is to pitch change. An upward slope is unstable and will not fly for very long, but will do impressive back flips! The further back the CoL (and the more stable and sluggish) the more the craft will want to pitch down. This is often negligible but will need to be taken into account if very high stability is sought.

A high lift to drag ratio is desirable for carrying cargo, but as lift is inexorably tied to drag (you can't produce one without the other) a low drag coefficient is of prime importance for very high speed vehicles.

Where a line splits and then rejoins shows a wing stall condition (a sudden reduction in lift). The more significant and sudden the separation the more future you will hate present you.