# 3D [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) ## Topics - **3DCONVERSIONMODE System Variable** — [General reference](Help%20System/GSTARCAD/2027/System%20Variables/3DCONVERSIONMODE%20System%20Variable.md) · [Alphabetical reference](Help%20System/GSTARCAD/2027/System%20Variables/3DCONVERSIONMODE%20System%20Variable.md) - [3DDWFPREC System Variable](Help%20System/GSTARCAD/2027/System%20Variables/3D/3DDWFPREC.md) - [3DOSMODE System Variable](Help%20System/GSTARCAD/2027/System%20Variables/3D/3DOSMODE%20System%20Variable.md) - **3DSELECTIONMODE System Variable** — [General reference](Help%20System/GSTARCAD/2027/System%20Variables/3DSELECTIONMODE%20System%20Variable.md) · [Alphabetical reference](Help%20System/GSTARCAD/2027/System%20Variables/3DSELECTIONMODE%20System%20Variable.md) [Original category](https://www.gstarcad.net/help/GstarCAD_2027_en-US/menu/systemVariables_3Dgsv.html)