src/vs/editor/common/cursor/oneCursor.ts/Cursor/constructor
class Cursor:	constructor(context: CursorContext) {
		this._selTrackedRange = null;
		this._trackSelection = true;

		this._setState(
			context,
			new SingleCursorState(new Range(1, 1, 1, 1), 0, new Position(1, 1), 0),
			new SingleCursorState(new Range(1, 1, 1, 1), 0, new Position(1, 1), 0)
		);
	}