# UCSICON Command
[GstarCAD 2020](Help%20System/GSTARCAD/2020/Index.md) → [Commands](Help%20System/GSTARCAD/2020/Commands/(Commands).md) → [U](Help%20System/GSTARCAD/2020/Commands/U/(U).md)
The UCSICON command is used to control the visibility, position, appearance, and option of UCS icons.
## Command Access:
> **Ribbon:** View \> Ordinate \> UCS Icon
> **Menu:** View \> Display \> UCS Icon
> \> On
> **Command:** UCSICON
## Command Prompts:
> Enter an option \[ON/OFF/ALL/Noorigin/ORigin/Properties\]
> \<ON\>:
## Function Description:
The UCS icon displays the position and direction of current UCS.
The coordinate system is different in paper space and model space. In the model space, user could switch between 2D and 3D style.
**2D:** if the UCS is the same as the WCS, the letter Z in UCS will replaced by the letter W. If rotating the UCS to make the Z axis on a plane that parallel to the observation plane (in other word, the XY plane seems as a line for observer), the 2D UCS icon becomes a break sketch.
  
**3D:** if the current UCS is the same as WCS, looking down the UCS (the positive direction of Z axis), the origin in XY plane displays as a box; looking up the UCS, the box disappears.
Relative Glossary:
**ON:**
Display the UCS icon.
**OFF:**
Turn off the UCS icon.
**ALL:**
Apply all changes on all active viewports. Otherwise, the UCSICON command only has influence on current viewport.
**Noorigin:**
No matter where is the origin, the UCS icon displays at the left-bottom of viewport.
**ORigin:**
Display the UCS icon at (0, 0, 0). If the origin is beyond of current viewport, the UCS icon will be displayed at the left-bottom of viewport.
## Properties:
Display the "UCS Icon" dialog box, users could control style, visibility, and position of UCS icon.
## Other versions with matching text
[GstarCAD 2016](../../../2016/Commands/U/UCSICON%20Command.md) · [GstarCAD 2017](../../../2017/Commands/U/UCSICON%20Command.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/Commands/U/UCSICON%20Command.md) · [GstarCAD 2019](Help%20System/GSTARCAD/2019/Commands/U/UCSICON%20Command.md) · [GstarCAD 2021](Help%20System/GSTARCAD/2021/Commands/U/UCSICON%20Command.md)