Reading this
▲Attacker (Verge). Filled while under fire.
●Escort, on a free circumnavigation.
■The station. Frame origin, never moves.
✕Destroyed.
—Beam. Drawn only while dose is landing.
◌Turret envelope, 9 km.
↑Up is away from Earth.
Higher means slower, so up-and-ahead drifts backwards.