# DIMSAH System Variable [GstarCAD 2017](Help%20System/GSTARCAD/2017/Index.md) → [System Variables](Help%20System/GSTARCAD/2017/System%20Variables/(System%20Variables).md) → [D](Help%20System/GSTARCAD/2017/System%20Variables/D/(D).md) **Function Description:** The DIMSAH system variable is used to control the display of arrowhead block in dimension line. | | | | --- | --- | | Type | Parameter | | Saved in | Drawing | | Initial value | Off | **System Variable Value:** **off:** use the arrowhead block set by DIMBLK system variable **on:** use the arrowhead block set by DIMBLK1 and DIMBLK2 system variable --- ## Other versions with matching text [GstarCAD 2016](../../../2016/System%20Variables/D/DIMSAH%20System%20Variable--bcb638c449f4.md) · [GstarCAD 2018](../../../2018/System%20Variables/D/DIMSAH%20System%20Variable--bcb638c449f4.md) · [GstarCAD 2019](../../../2019/System%20Variables/D/DIMSAH%20System%20Variable--bcb638c449f4.md) · [GstarCAD 2020](Help%20System/GSTARCAD/2020/System%20Variables/D/DIMSAH%20System%20Variable--bcb638c449f4.md) · [GstarCAD 2021](../../../2021/System%20Variables/D/DIMSAH%20System%20Variable--bcb638c449f4.md) · [GstarCAD 2022](Help%20System/GSTARCAD/2022/System%20Variables/D/DIMSAH%20System%20Variable--bcb638c449f4.md)