# XREFCTL System Variable [GstarCAD 2017](Help%20System/GSTARCAD/2017/Index.md) → [System Variables](Help%20System/GSTARCAD/2017/System%20Variables/(System%20Variables).md) → [X](Help%20System/GSTARCAD/2017/System%20Variables/X/(X).md) **Function Description:** The XREFCTL system variable is used to control whether to create xref log files or not. | | | | --- | --- | | Type | Integer | | Saved in | Registry | | Initial value | 0 | | Range | 0,1 | **System Variable Value:** **0:** do not write log files **1:** write log files --- ## Other versions with matching text [GstarCAD 2016](../../../2016/System%20Variables/X/XREFCTL%20System%20Variable--ade92216d307.md) · [GstarCAD 2018](../../../2018/System%20Variables/X/XREFCTL%20System%20Variable--ade92216d307.md) · [GstarCAD 2019](../../../2019/System%20Variables/X/XREFCTL%20System%20Variable--ade92216d307.md) · [GstarCAD 2020](../../../2020/System%20Variables/X/XREFCTL%20System%20Variable--ade92216d307.md) · [GstarCAD 2021](Help%20System/GSTARCAD/2021/System%20Variables/X/XREFCTL%20System%20Variable--ade92216d307.md) · [GstarCAD 2022](Help%20System/GSTARCAD/2022/System%20Variables/X/XREFCTL%20System%20Variable--ade92216d307.md)