# DIMALTTZ 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 DIMALTTZ system variable is used to control zero suppression for tolerance. | | | | --- | --- | | Type | Integer | | Saved in | Drawing | | Initial value | 0 | | Range | 0 ~ 15 | ## System Variable Value: **0:** suppress zero feet and zero inch **1:** include zero feet and zero inch **2:** include zero feet and suppress zero inch **3:** include zero inch and suppress zero feet To suppress leading or trailing zeros. Add the following values to one of the preceding values: **4:** suppress leading zero **8:** suppress trailing zero --- [Original help](https://www.gstarcad.net/help/GstarCAD_2026_en-US/detail/systemVariables_Dgsv/DIMALTTZ.html) · © Gstarsoft Co., Ltd.