# Commands about Model Space and Paper Space [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [Commands](Help%20System/GSTARCAD/2027/Commands/(Commands).md) **Commands：** - [CHSPACE (GstarCAD 2026)](../../2026/Commands/CHSPACE.md) - [LTSCALE (GstarCAD 2026)](../../2026/Commands/LTSCALE.md) - [MODEL (GstarCAD 2026)](../../2026/Commands/MODEL.md) - [PAGESETUP (GstarCAD 2026)](../../2026/Commands/PAGESETUP.md) - [VPORTS (GstarCAD 2026)](../../2026/Commands/VPORTS.md) **System Variables：** - [CELTSCALE (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/CELTSCALE.md) - [CTAB (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/CTAB.md) - [CVPORT (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/CVPORT.md) - [DIMSCALE (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/DIMSCALE.md) - [HPSCALE (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/HPSCALE.md) - [INSUNITS (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/INSUNITS.md) - [INSUNITSDEFSOURCE (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/INSUNITSDEFSOURCE.md) - [INSUNITSDEFTARGET (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/INSUNITSDEFTARGET.md) - [LTSCALE (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/LTSCALE.md) - [LUNITS (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/LUNITS.md) - [TILEMODE (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/TILEMODE.md) - [VIEWCTR (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/VIEWCTR.md) - [VIEWSIZE (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/VIEWSIZE.md) --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/commandReferences/Commands%20about%20Model%20Space%20and%20Paper%20Space.html) · © Gstarsoft Co., Ltd.