# Mirror Enhancement [GstarCAD 2020](Help%20System/GSTARCAD/2020/Index.md) → [User Guide](Help%20System/GSTARCAD/2020/User%20Guide/(User%20Guide).md) → [Innovative Features](Help%20System/GSTARCAD/2020/User%20Guide/Innovative%20Features/(Innovative%20Features).md) ## Mirror Enhancement In GstarCAD2017 we enhance the MIRROR command adding a new option.Besides picking start and end point to define mirror axis, you can also directly select objects as mirror axis like a line, polyline, a line of block,or an external reference drawing  --- Gstarsoft Co.,Ltd ## Other versions with matching text [GstarCAD 2017](../../../2017/User%20Guide/What%27s%20new%20in%20GstarCAD%202017/Mirror%20Enhancement.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/User%20Guide/Innovative%20Features/Mirror%20Enhancement.md) · [GstarCAD 2019](Help%20System/GSTARCAD/2019/User%20Guide/Innovative%20Features/Mirror%20Enhancement.md) · [GstarCAD 2021](Help%20System/GSTARCAD/2021/User%20Guide/Additional%20Pages/Mirror%20Enhancement.md)