# IMPLIEDFACE System Variable [GstarCAD 2022](Help%20System/GSTARCAD/2022/Index.md) → [System Variables](Help%20System/GSTARCAD/2022/System%20Variables/(System%20Variables).md) → [I](Help%20System/GSTARCAD/2022/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 can not be detected **1:** implied faces can be detected The implied face is a closed region, it can 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.