# UCSBASE System Variable [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [System Variables](Help%20System/GSTARCAD/2021/System%20Variables/(System%20Variables).md) → [U](Help%20System/GSTARCAD/2021/System%20Variables/U/(U).md) **Function Description:** The UCSBASE system variable is used to store the the name of UCS that defined the original point and direction for ortho UCS settings. | | | | --- | --- | | Type | Strings | | Saved in | Drawing | | Initial value | "" | The valid value could be any named UCS.. --- ## Other versions with matching text [GstarCAD 2016](../../../2016/System%20Variables/U/UCSBASE%20System%20Variable--3852e51eedc6.md) · [GstarCAD 2017](Help%20System/GSTARCAD/2017/System%20Variables/U/UCSBASE%20System%20Variable--3852e51eedc6.md) · [GstarCAD 2018](../../../2018/System%20Variables/U/UCSBASE%20System%20Variable--3852e51eedc6.md) · [GstarCAD 2019](../../../2019/System%20Variables/U/UCSBASE%20System%20Variable--3852e51eedc6.md) · [GstarCAD 2020](../../../2020/System%20Variables/U/UCSBASE%20System%20Variable--3852e51eedc6.md)