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Highways are energy fields where all particles inside are accelerated to a very high speed in a particular direction. Functionally, they are similar to boost engines, but require no energy from the individual ships to maintain their high velocity.
To use a highway, simply fly into it.
To exit a highway, either hit a wall of the highway or apply reverse thrust. Note that it is not possible to exit superhighways which connect Sectors to one another.
Flight Assist
Flight assist is an advanced function that automatically makes small adjustments with your engines and thrusters to maintain the speed that you set in the direction that you point your ship to. Most notably, it applies reverse, and possibly lateral, thrust to make your ship stop if you set your throttle to zero, and to counter external forces applied on your ship.
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