# INDEXCTL System Variable [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [System Variables](Help%20System/GSTARCAD/2021/System%20Variables/(System%20Variables).md) → [I](Help%20System/GSTARCAD/2021/System%20Variables/I/(I).md) ## Function Description: The INDEXCTL system variable is used to control whether to create layer and space index and save them to drawing files. | | | | --- | --- | | Type | Integer | | Saved in | Drawing | | Initial value | 0 | | Range | 0,1,2,3 | ## System Variable Value: **0:** do not create index **1:** create layer index **2:** create space index **3:** create layer index and space index --- ## Other versions with matching text [GstarCAD 2016](../../../2016/System%20Variables/I/INDEXCTL%20System%20Variable.md) · [GstarCAD 2017](Help%20System/GSTARCAD/2017/System%20Variables/I/INDEXCTL%20System%20Variable.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/System%20Variables/I/INDEXCTL%20System%20Variable.md) · [GstarCAD 2019](Help%20System/GSTARCAD/2019/System%20Variables/I/INDEXCTL%20System%20Variable.md) · [GstarCAD 2020](Help%20System/GSTARCAD/2020/System%20Variables/I/INDEXCTL%20System%20Variable.md) · [GstarCAD 2022](Help%20System/GSTARCAD/2022/System%20Variables/I/INDEXCTL%20System%20Variable.md)