# Use Dimension Styles [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [User Guide](Help%20System/GSTARCAD/2021/User%20Guide/(User%20Guide).md) → [Dimensions](Help%20System/GSTARCAD/2021/User%20Guide/Dimensions/(Dimensions).md) You can control the appearance of dimensions by modifying dimension styles. These settings in dimension styles can be stored for convenience and to help maintain dimensioning standards. [Overview of Dimension Styles](Help%20System/GSTARCAD/2021/User%20Guide/Dimensions/Use%20Dimension%20Styles/Overview%20of%20Dimension%20Styles.md) The appearance of dimensions is controlled by a dimension style, which is a named collection of dimension settings. [Control Dimension Geometry](Help%20System/GSTARCAD/2021/User%20Guide/Dimensions/Use%20Dimension%20Styles/Control%20Dimension%20Geometry.md) You can control the appearance of dimension lines, extension lines, arrowheads, and center marks. [Control Dimension Text](Help%20System/GSTARCAD/2021/User%20Guide/Dimensions/Use%20Dimension%20Styles/Control%20Dimension%20Text.md) You can control the placement of dimension text, arrowheads, and leader lines relative to the dimension and extension lines. [Control Dimension Values](Help%20System/GSTARCAD/2021/User%20Guide/Dimensions/Use%20Dimension%20Styles/Control%20Dimension%20Values.md) The numeric values displayed in dimensions can appear in several formats. You can also control how numeric distances are represented. --- ## Other versions with matching text [GstarCAD 8 (2013–2014)](../../../2013/User%20Guide/Dimensions/Use%20Dimension%20Styles.md) · [GstarCAD 2015](../../../2015/User%20Guide/Dimensions/Use%20Dimension%20Styles.md) · [GstarCAD 2016](../../../2016/User%20Guide/Dimensions/Use%20Dimension%20Styles.md) · [GstarCAD 2017](../../../2017/User%20Guide/Dimensions/Use%20Dimension%20Styles.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/User%20Guide/Dimensions/Use%20Dimension%20Styles.md) · [GstarCAD 2019](Help%20System/GSTARCAD/2019/User%20Guide/Dimensions/Use%20Dimension%20Styles.md) · [GstarCAD 2020](Help%20System/GSTARCAD/2020/User%20Guide/Dimensions/Use%20Dimension%20Styles.md)