On a Front Cross, your dog switches Flanks in with you in front of them. From Clock to Counter Clockwise Flank or vice versa.
Taken directly from the canine agility world, the Front Cross is a foundational Flatwork skill for team movement. It allows you to move your dog around the field in stylish fashion.
On the Front Cross, your dog will turn towards you when they switch working sides, which provides another way of looking at the skill.
The Front Cross relies on Positional Pressure and the Plane of your body to communicate movement.