# NAVVCUBEOPACITY System Variable [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [System Variables](Help%20System/GSTARCAD/2021/System%20Variables/(System%20Variables).md) → [N](Help%20System/GSTARCAD/2021/System%20Variables/N/(N).md) ## Function Description: The NAVVCUBEOPACITY system variable is used to control the opacity of ViewCube tool when it is not active. | | | | --- | --- | | Type | Integer | | Saved in | Registry | | Initial value | 50 | | Range | 0% \~ 100% | When specified to be 100, the ViewCube will be opacity to display in drawing window and hide all objects under ViewCube in viewport. If specified to be a value smaller than 100, the ViewCube will fade displaying in the drawing window and all objects under it could be visible. Specified to be 0, the ViewCube will not display in the viewport unless placing cursor on it. --- ## Other versions with matching text [GstarCAD 2016](../../../2016/System%20Variables/N/NAVVCUBEOPACITY%20System%20Variable.md) · [GstarCAD 2017](Help%20System/GSTARCAD/2017/System%20Variables/N/NAVVCUBEOPACITY%20System%20Variable.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/System%20Variables/N/NAVVCUBEOPACITY%20System%20Variable.md) · [GstarCAD 2019](Help%20System/GSTARCAD/2019/System%20Variables/N/NAVVCUBEOPACITY%20System%20Variable.md) · [GstarCAD 2020](Help%20System/GSTARCAD/2020/System%20Variables/N/NAVVCUBEOPACITY%20System%20Variable.md)