# DIMCENTER Command
[GstarCAD 2022](Help%20System/GSTARCAD/2022/Index.md) → [Commands](Help%20System/GSTARCAD/2022/Commands/(Commands).md) → [D](Help%20System/GSTARCAD/2022/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
\[polygon(P)\]:
