# UCSXDIR System Variable [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [System Variables](Help%20System/GSTARCAD/2027/System%20Variables/(System%20Variables).md) **Function Description:** The UCSXDIR system variable is used to store the X direction of the current UCS in the current viewport of the current space. (Read-Only) | | | | --- | --- | | Type | 3D point | | Saved in | Drawing | | Initial value | 0.0000,1.0000,0.0000 | The X direction of UCS can be different for each viewport. --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/systemVariables/UCSXDIR.html) · © Gstarsoft Co., Ltd.