# UCS Icon Dialog Box
[GstarCAD 2022](Help%20System/GSTARCAD/2022/Index.md) → [Commands](Help%20System/GSTARCAD/2022/Commands/(Commands).md) → [03 Dialog Boxes](Help%20System/GSTARCAD/2022/Commands/03%20Dialog%20Boxes/(Dialog%20Boxes).md)
## Function Description:
The UCS
Icon dialog box is used to control the style, visibility, and location of the UCS icons.
**Dialog Box Options:**
## **UCS icon style**
Controls the display style of 2D or 3D UCS icon.
- **2D**:
Displays the 2D icon without Z axis.
- **3D**:
Displays the 3D icon.
- **Lineweight:**
Controls the lineweight of UCS icon when the 3D UCS icon is selected.
## **Preview**
Displays the preview of the UCS icon in model space.
## **UCS icon size**
Controls the size of the UCS icon according to size of viewport. The default size is 50, ranges from 5 to 95\.
**Note:** The size of the UCS icon is in proportion to its viewport size.
## **UCS icon color**
Controls the UCS icon color in model space viewport and layout tab.
- **Model space icon color:**
Controls the UCS icon color in model space.
- **Layout tab icon color:**
Controls the UCS icon color in layout tab.
- **Apply single color:**
Applies the selected UCS icon color in one model space to all 2D UCS icons.