# NAVVCUBESIZE System Variable [GstarCAD 2022](Help%20System/GSTARCAD/2022/Index.md) → [System Variables](Help%20System/GSTARCAD/2022/System%20Variables/(System%20Variables).md) → [N](Help%20System/GSTARCAD/2022/System%20Variables/N/(N).md) ## Function Description: The NAVVCUBESIZE system variable is used to specify the size of ViewCube tool. | | | | --- | --- | | Type | Integer | | Saved in | Registry | | Initial value | 4 | | Range | 0,1,2,3,4 | ## System Variable Value: **0:**small **1:**normal **2:**big **3:**smallest **4:**auto;the size of ViewCube can be scaled by scale factor of active viewport or active layout, or the size of drawing window