# SHADOWPLANELOCATION System Variable [GstarCAD 2020](Help%20System/GSTARCAD/2020/Index.md) → [System Variables](Help%20System/GSTARCAD/2020/System%20Variables/(System%20Variables).md) → [S](Help%20System/GSTARCAD/2020/System%20Variables/S/(S).md) ## Function Description: The SHADOWPLANELOCATION system variable is used to control the location of an invisible ground plane used to display shadows. | | | | --- | --- | | Type | Real | | Saved in | Drawing | | Initial value | 0.0000 | The SHADOWPLANELOCATION value is current location on Z axis. The ground plane is invisible, but it could project and receive shadows. Objects under ground plane could project shadows by ground plane. --- ## Other versions with matching text [GstarCAD 2016](../../../2016/System%20Variables/S/SHADOWPLANELOCATION%20System%20Variable.md) · [GstarCAD 2017](Help%20System/GSTARCAD/2017/System%20Variables/S/SHADOWPLANELOCATION%20System%20Variable.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/System%20Variables/S/SHADOWPLANELOCATION%20System%20Variable.md) · [GstarCAD 2019](Help%20System/GSTARCAD/2019/System%20Variables/S/SHADOWPLANELOCATION%20System%20Variable.md) · [GstarCAD 2021](Help%20System/GSTARCAD/2021/System%20Variables/S/SHADOWPLANELOCATION%20System%20Variable.md)