# DIMBLK System Variable [GstarCAD 2026](Help%20System/GSTARCAD/2026/Index.md) → [System Variables](Help%20System/GSTARCAD/2026/System%20Variables/(System%20Variables).md) → [D](Help%20System/GSTARCAD/2026/System%20Variables/D/(D).md) ## Function Description: The DIMBLK system variable is used to set the display of arrow block on the end extension line. | | | | --- | --- | | Type | Strings | | Saved in | Drawing | | Initial value | "" | Users can enter a Period "." to restore default settings. **Note:** the annotative block can not be used as customized arrow for dimensions and leaders. ## System Variable Value: **"" :** closed filled **"\_DOT":** dot **"\_DOTSMALL":** dot small **"\_DOTBLAN":** dot blank **"\_ORIGIN":** origin indicator **"\_ORIGIN2":** origin indicator 2 **"\_OPEN":** open **"\_OPEN90":** right angle **\_OPEN30":** open 30 **"\_CLOSED":** closed **"\_SMALL":** dot small blank **"\_NONE":** none **"\_OBLIQUE":** oblique **"\_BOXFILLED":** box filled **"\_BOXLANK":** box **"\_CLOSEDBLANK":** closed blank **"\_DATUMFILLED":** datum triangle filled **"\_DATUMBLANK":** datum triangle **"\_INTEGRAL":** integral **"\_ARCHICK":** architectural tick --- [Original help](https://www.gstarcad.net/help/GstarCAD_2026_en-US/detail/systemVariables_Dgsv/DIMBLK.html) · © Gstarsoft Co., Ltd.