1) Not sure what button you are refering to.
2) You don't actually drag the triangle. When you place your cursor on the A-Scope screen and hold the left mouse button down, the radar screen moves in the direction you move your mouse, the triangle stays stationary. Can you move the screen using the dial on the left?
3) The White numbers are the radar range according to where you set the triangle. The green numbers won't activate until you have a solution entered into the TDC. That's the next lesson.
JCC
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