# DIMCENTER Command
[GstarCAD 2024](Help%20System/GSTARCAD/2024/Index.md) → [Commands](Help%20System/GSTARCAD/2024/Commands/(Commands).md) → [D](Help%20System/GSTARCAD/2024/Commands/D/(D).md)
## Function Description:
This command is used to create center marks or centerlines for circles or arcs. Users can set options of Center marks in Symbols and Arrows tab of the Dimension Style Manager dialog box. You can choose between center marks and centerlines and specify their size when you set up the dimension style. You can also change center mark settings using the DIMCEN system variable.
## Command Access:
> **Icon:** 
> **Menu:** Dimension > Center Mark
> **Ribbon:** Annotation > Dimension > Center Mark
> **Toolbar:** Dimension > Center Mark
> **Command:** DIMCENTER
> **Alias:** DCE
## Command Prompts:
```
Select arc or circle, or [polygon(P)]:
```
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**Related References：**
- [Commands about Radial Dimensions](Help%20System/GSTARCAD/2024/Commands/00%20Command%20Groups/Commands%20about%20Radial%20Dimensions.md)
**Related Concepts：**
- [About the Types of Dimensions](Help%20System/GSTARCAD/2024/Commands/02%20Concepts/About%20the%20Types%20of%20Dimensions.md)
**Related Tasks：**
- [To Create Linear Dimensions](Help%20System/GSTARCAD/2024/Commands/01%20Procedures/To%20Create%20Linear%20Dimensions.md)
- [To Create Radial Dimensions](Help%20System/GSTARCAD/2024/Commands/01%20Procedures/To%20Create%20Radial%20Dimensions.md)
- [To Create Angular Dimensions](Help%20System/GSTARCAD/2024/Commands/01%20Procedures/To%20Create%20Angular%20Dimensions.md)
- [To Create Arc Length Dimensions](Help%20System/GSTARCAD/2024/Commands/01%20Procedures/To%20Create%20Arc%20Length%20Dimensions.md)
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[Original help](https://www.gstarcad.net/help/GstarCAD_2024_en-US/detail/commandReferences_D/DIMCENTER.html) · © Gstarsoft Co., Ltd.