# DIMALTU 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 DIMALTU system variable is used to set unit formats for alternate units of all dimension sub styles(except angular dimension). | | | | --- | --- | | Type | Integer | | Saved in | Drawing | | Initial value | 2 | | Range | 1 ~ 8 | ## System Variable Value: **1:** scientific **2:** decimal **3:** engineering **4:** architectural(stacked) **5:** grade (stacked) **6:** architectural **7:** fractional **8:** Microsoft Windows desktop (decimal format using control panel settings for decimal separator and number grouping symbols) --- [Original help](https://www.gstarcad.net/help/GstarCAD_2026_en-US/detail/systemVariables_Dgsv/DIMALTU.html) · © Gstarsoft Co., Ltd.