# UCAMAN Command [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [Commands](Help%20System/GSTARCAD/2021/Commands/(Commands).md) → [U](Help%20System/GSTARCAD/2021/Commands/U/(U).md) The UCSMAN command is used to manage the UCS definition. ## Command Access: > **Ribbon:** View \> Ordinate \> UCSMAN > **Menu:** Tools \> Named UCS > ... > **Command:** UCSMAN ## Function Description: ![](Help%20System/GSTARCAD/2021/assets/GCAD_GCR/images/UCSMAN-1.png)