# IMPLIEDFACE System Variable [GstarCAD 2017](Help%20System/GSTARCAD/2017/Index.md) → [System Variables](Help%20System/GSTARCAD/2017/System%20Variables/(System%20Variables).md) → [I](Help%20System/GSTARCAD/2017/System%20Variables/I/(I).md) ## Function Description: The IMPLIEDFACE system variable is used to control the detection of implied faces. | | | | --- | --- | | Type | Integer | | Saved in | Registry | | Initial value | 1 | | Range | 0,1 | ## System Variable Value: **0:** implied faces could not be detected **1:** implied faces could be detected The implied face is a closed region, it could be created by intersected overlapped faces of 3D solids. This variable must be set to 1 if you want to select and modify implied faces. --- ## Other versions with matching text [GstarCAD 2016](../../../2016/System%20Variables/I/IMPLIEDFACE%20System%20Variable.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/System%20Variables/I/IMPLIEDFACE%20System%20Variable.md) · [GstarCAD 2019](Help%20System/GSTARCAD/2019/System%20Variables/I/IMPLIEDFACE%20System%20Variable.md) · [GstarCAD 2020](Help%20System/GSTARCAD/2020/System%20Variables/I/IMPLIEDFACE%20System%20Variable.md) · [GstarCAD 2021](Help%20System/GSTARCAD/2021/System%20Variables/I/IMPLIEDFACE%20System%20Variable.md)