# DGN File Format [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [User Guide](Help%20System/GSTARCAD/2021/User%20Guide/(User%20Guide).md) → [Additional Pages](Help%20System/GSTARCAD/2021/User%20Guide/Additional%20Pages/(Additional%20Pages).md) **DGN File Format** Full DGN files support and related commands such as DGNIMPORT, DGNATTACH, DGNADJUST, DGNMAPING, etc are available. Now you can import and attach as underlay a Microstation native format. ![](Help%20System/GSTARCAD/2021/assets/GCAD_GUG/GCAD_GUG/pic/DGN%20File%20Format.jpg) --- Gstarsoft Co.,Ltd ## Other versions with matching text [GstarCAD 2017](../../../2017/User%20Guide/Additional%20Pages/DGN%20File%20Format--23b5d7208936.md) · [GstarCAD 2018](../../../2018/User%20Guide/Additional%20Pages/DGN%20File%20Format--23b5d7208936.md) · [GstarCAD 2019](../../../2019/User%20Guide/Additional%20Pages/DGN%20File%20Format--23b5d7208936.md)