# Commands about Creating Procedural Surfaces [GstarCAD 2023](Help%20System/GSTARCAD/2023/Index.md) → [Commands](Help%20System/GSTARCAD/2023/Commands/(Commands).md) → [Command Groups](Help%20System/GSTARCAD/2023/Commands/00%20Command%20Groups/(Command%20Groups).md) **Commands：** - [CONVTONURBS](Help%20System/GSTARCAD/2023/Commands/C/CONVTONURBS.md) - [CONVTOSURFACE](Help%20System/GSTARCAD/2023/Commands/C/CONVTOSURFACE.md) - [CVSHOW](Help%20System/GSTARCAD/2023/Commands/C/CVSHOW.md) - [DSETTINGS](Help%20System/GSTARCAD/2023/Commands/D/DSETTINGS.md) - [EXTRUDE](Help%20System/GSTARCAD/2023/Commands/E/EXTRUDE.md) - [LOFT](Help%20System/GSTARCAD/2023/Commands/L/LOFT.md) - [PLANESURF](Help%20System/GSTARCAD/2023/Commands/P/PLANESURF.md) - [REVOLVE](Help%20System/GSTARCAD/2023/Commands/R/REVOLVE.md) - [SPLINE](Help%20System/GSTARCAD/2023/Commands/S/SPLINE.md) - [SURFOFFSET](Help%20System/GSTARCAD/2023/Commands/S/SURFOFFSET.md) - [SWEEP](Help%20System/GSTARCAD/2023/Commands/S/SWEEP.md) **System Variables：** - [CULLINGOBJ](Help%20System/GSTARCAD/2023/System%20Variables/C/CULLINGOBJ.md) - [CULLINGOBJSELECTION](Help%20System/GSTARCAD/2023/System%20Variables/C/CULLINGOBJSELECTION.md) - [DELOBJ](Help%20System/GSTARCAD/2023/System%20Variables/D/DELOBJ.md) - [SURFACEASSOCIATIVITYDRAG](Help%20System/GSTARCAD/2023/System%20Variables/S/SURFACEASSOCIATIVITYDRAG.md) - [SURFACEAUTOTRIM](Help%20System/GSTARCAD/2023/System%20Variables/S/SURFACEAUTOTRIM.md) --- [Original help](https://www.gstarcad.net/help/GstarCAD_2023_en-US/detail/commandReferences/Commands%20about%20Creating%20Procedural%20Surfaces.html) · © Gstarsoft Co., Ltd.