# REBUILD2DOPTION System Variable [GstarCAD 2019](Help%20System/GSTARCAD/2019/Index.md) → [System Variables](Help%20System/GSTARCAD/2019/System%20Variables/(System%20Variables).md) → [R](Help%20System/GSTARCAD/2019/System%20Variables/R/(R).md) **Function Description:** The REBUILD2DOPTION system variable is used to control whether to delete original curves when rebuilding splines. | | | | --- | --- | | Type | Integer | | Saved in | Registry | | Initial value | 1 | | Range | 0,1 | **System Variable Value:** **0:** keep original curves **1:** delete original curves --- ## Other versions with matching text [GstarCAD 2016](../../../2016/System%20Variables/R/REBUILD2DOPTION%20System%20Variable--f3b3e1df1a59.md) · [GstarCAD 2017](Help%20System/GSTARCAD/2017/System%20Variables/R/REBUILD2DOPTION%20System%20Variable--f3b3e1df1a59.md) · [GstarCAD 2018](../../../2018/System%20Variables/R/REBUILD2DOPTION%20System%20Variable--f3b3e1df1a59.md) · [GstarCAD 2020](../../../2020/System%20Variables/R/REBUILD2DOPTION%20System%20Variable--f3b3e1df1a59.md) · [GstarCAD 2021](Help%20System/GSTARCAD/2021/System%20Variables/R/REBUILD2DOPTION%20System%20Variable--f3b3e1df1a59.md) · [GstarCAD 2022](Help%20System/GSTARCAD/2022/System%20Variables/R/REBUILD2DOPTION%20System%20Variable--f3b3e1df1a59.md)