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[list][*]Kéo thả miền xác định.[/*][*]Thay đổi các hàm sơ cấp.[br][/*][*]Phóng to, thu nhỏ.[br][/*][*]Tích hộp [b]More[/b] để xem di chuyển của ảnh khi di chuyển điểm trong miền xác định.[/*][/list]