# DIMDIAMETER Command [GstarCAD 2020](Help%20System/GSTARCAD/2020/Index.md) → [Commands](Help%20System/GSTARCAD/2020/Commands/(Commands).md) → [D](Help%20System/GSTARCAD/2020/Commands/D/(D).md) The DIMDIAMETER command is used to create diameter dimension of an arc or a circle. ## Command Access: > **Ribbon:** Annotation \> Dimension \>Dimension \>Diameter **Menu:** Dimension \> Diameter > **Command:** DIMDIAMETER ## Command Prompts: > Select arc or circle: > Specify dimension line location or \[Mtext/Text/Angle\]: ## Function Description: This command is used to create a diameter dimension for selected circle or arc with a diameter symbol before the annotation text. Users could change location of annotation text by dragging pinch points.  **Relative Glossary:** **Dimension line location:** Specify the dimension line and annotation text location. **Mtext:** Edit dimension annotation text by In-place text editor. Users could input special characters and symbols by control code or Unicode character string. If the unit conversion is off, users could input square bracket (\[\]) to display them. The current annotation style determines the appearance of generated measured value. **Text:** Customize annotation text under command prompt. The generated measured value will be displayed in angle bracket (\<\>). If the unit conversion is off, users could input square bracket (\[\]) to display them. User could reset the dimension style in "Text" option of New, Modify, and Override in the Dimension Style Manager Dialog box. **Angle:** Specify the angle of text. ## Other versions with matching text [GstarCAD 2016](../../../2016/Commands/D/DIMDIAMETER%20Command.md) · [GstarCAD 2017](../../../2017/Commands/D/DIMDIAMETER%20Command.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/Commands/D/DIMDIAMETER%20Command.md) · [GstarCAD 2019](Help%20System/GSTARCAD/2019/Commands/D/DIMDIAMETER%20Command.md) · [GstarCAD 2021](Help%20System/GSTARCAD/2021/Commands/D/DIMDIAMETER%20Command.md)