# Commands about Model Space and Paper Space [GstarCAD 2025](Help%20System/GSTARCAD/2025/Index.md) → [Commands](Help%20System/GSTARCAD/2025/Commands/(Commands).md) **Commands：** - [CHSPACE](Help%20System/GSTARCAD/2025/Commands/CHSPACE.md) - [LTSCALE](Help%20System/GSTARCAD/2025/Commands/LTSCALE.md) - [MODEL](Help%20System/GSTARCAD/2025/Commands/MODEL.md) - [PAGESETUP](Help%20System/GSTARCAD/2025/Commands/PAGESETUP.md) - [VPORTS](Help%20System/GSTARCAD/2025/Commands/VPORTS--d7100c3160.md) **System Variables：** - [CELTSCALE](../System%20Variables/CELTSCALE.md) - [CTAB](../System%20Variables/CTAB.md) - [CVPORT](Help%20System/GSTARCAD/2025/System%20Variables/CVPORT.md) - [DIMSCALE](Help%20System/GSTARCAD/2025/System%20Variables/DIMSCALE.md) - [HPSCALE](Help%20System/GSTARCAD/2025/System%20Variables/HPSCALE.md) - [INSUNITS](Help%20System/GSTARCAD/2025/System%20Variables/INSUNITS.md) - [INSUNITSDEFSOURCE](Help%20System/GSTARCAD/2025/System%20Variables/INSUNITSDEFSOURCE.md) - [INSUNITSDEFTARGET](Help%20System/GSTARCAD/2025/System%20Variables/INSUNITSDEFTARGET.md) - [LTSCALE](Help%20System/GSTARCAD/2025/System%20Variables/LTSCALE.md) - [LUNITS](Help%20System/GSTARCAD/2025/System%20Variables/LUNITS.md) - [TILEMODE](Help%20System/GSTARCAD/2025/System%20Variables/TILEMODE.md) - [VIEWCTR](Help%20System/GSTARCAD/2025/System%20Variables/VIEWCTR.md) - [VIEWSIZE](Help%20System/GSTARCAD/2025/System%20Variables/VIEWSIZE.md) --- [Original help](https://www.gstarcad.net/help/GstarCAD_2025_en-US/detail/commandReferences/Commands%20about%20Model%20Space%20and%20Paper%20Space.html) · © Gstarsoft Co., Ltd.