I've added a "WIND" button to the SA. It shows Ground Velocity (green), Air Velocity (blue) + Wind Velocity (cyan)
(These are 100x scaled the per-second velocity, i.e. they show how far the plane/object would travel in 100 seconds)
It's a vector sum, which can be a bit unintuitive, but basically, to add vectors A and B to get C you just draw A then draw B from the end of A, and then C is the start of A to the end of the B.
Ground Velocity = Air Velocity + Wind Velocity
Ground Velocity = speed and direction we are moving in relative to the ground
Air Velocity = speed and direction we are moving in relative to the air around the plane
Wind Velocity = speed and direction the air around the plane is moving relative to the ground
The graphs show the
speeds, which is the unsigned length of the velocity vectors, same colors.