# DIMLDRBLK System Variable [GstarCAD 2022](Help%20System/GSTARCAD/2022/Index.md) → [System Variables](Help%20System/GSTARCAD/2022/System%20Variables/(System%20Variables).md) → [D](Help%20System/GSTARCAD/2022/System%20Variables/D/(D).md) **Function Description:** The DIMLDRBLK system variable is used to specify arrowhead type for leaders. | | | | --- | --- | | Type | Strings | | Saved in | Drawing | | Initial value | "" | Input a Period "." to restore the default settings( closed- filled arrowhead). **Note:** the annotative block can not be used as custom arrowhead for dimension or leader.