# UCS Icon Dialog Box [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [Commands](Help%20System/GSTARCAD/2027/Commands/(Commands).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. --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/commandReferences/UCSICON_DIA.html) · © Gstarsoft Co., Ltd.