# Commands about Creating Procedural Surfaces [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [Commands](Help%20System/GSTARCAD/2027/Commands/(Commands).md) → [Command Groups](Help%20System/GSTARCAD/2027/Commands/00%20Command%20Groups/(Command%20Groups).md) **Commands：** - [CONVTONURBS (GstarCAD 2026)](../../../2026/Commands/C/CONVTONURBS.md) - [CONVTOSURFACE (GstarCAD 2026)](../../../2026/Commands/C/CONVTOSURFACE.md) - [CVSHOW (GstarCAD 2026)](../../../2026/Commands/C/CVSHOW.md) - [DSETTINGS (GstarCAD 2026)](../../../2026/Commands/D/DSETTINGS.md) - [EXTRUDE (GstarCAD 2026)](../../../2026/Commands/E/EXTRUDE.md) - [LOFT (GstarCAD 2026)](../../../2026/Commands/L/LOFT.md) - [PLANESURF (GstarCAD 2026)](../../../2026/Commands/P/PLANESURF.md) - [REVOLVE (GstarCAD 2026)](../../../2026/Commands/R/REVOLVE.md) - [SPLINE (GstarCAD 2026)](../../../2026/Commands/S/SPLINE.md) - [SURFOFFSET (GstarCAD 2026)](../../../2026/Commands/S/SURFOFFSET.md) - [SWEEP (GstarCAD 2026)](../../../2026/Commands/S/SWEEP.md) **System Variables：** - [CULLINGOBJ (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/C/CULLINGOBJ.md) - [CULLINGOBJSELECTION (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/C/CULLINGOBJSELECTION.md) - [DELOBJ (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/D/DELOBJ.md) - [SURFACEASSOCIATIVITYDRAG (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/S/SURFACEASSOCIATIVITYDRAG.md) - [SURFACEAUTOTRIM (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/S/SURFACEAUTOTRIM.md) --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/commandReferences/Commands%20about%20Creating%20Procedural%20Surfaces.html) · © Gstarsoft Co., Ltd.