1.unity Editor by default in the red is the x-axis, around the control; green y-axis, upper and lower control. Blue is the z-axis, the front and rear control. In the case of the world coordinate system, moving to a single axis of coordinates, the code can be accessed using the position. In the case of the local coordinate system, if the object has rotated, the bidirectional movement of the coordinates, the code can be accessed by localpostion.
2. Modify settings editor
Edit - Preference - External Script Editor