Warrior General Games

I'm wondering what the differences are among the distances for the zones in the D-play creator. How does the idea of "Cover zone deep" interact with the type of zone that you set your guys to play?

For instance, say I want to set my FS to a Deep Third zone. What is the difference between Cover Zone Shallow, Cover Zone Medium, and Cover Zone Deep? How will these affect the play?

Shallow the safety will start running towards the lower part of the zone
Medium the safety will start running towards the middle part of the zone
Deep the safety will start running towards the higher part of the zone

It affects the positioning of the safety of the zone and then starts looking for WRs and such.
For example, a safety with a Deep Third Zone on Cover Zone Deep will back up more and could be out of position for a hitch route but he will be better prepared for a streak route because he is running in the direction the WR is going to be at.