# Commands about Regions and Areas [GstarCAD 2025](Help%20System/GSTARCAD/2025/Index.md) → [Commands](Help%20System/GSTARCAD/2025/Commands/(Commands).md) → [Command Groups](Help%20System/GSTARCAD/2025/Commands/00%20Command%20Groups/(Command%20Groups).md) **Commands：** - [BOUNDARY](Help%20System/GSTARCAD/2025/Commands/B/BOUNDARY.md) - [INTERSECT](Help%20System/GSTARCAD/2025/Commands/I/INTERSECT.md) - [MASSPROP](Help%20System/GSTARCAD/2025/Commands/M/MASSPROP.md) - [REGION](Help%20System/GSTARCAD/2025/Commands/R/REGION.md) - [SUBTRACT](Help%20System/GSTARCAD/2025/Commands/S/SUBTRACT.md) - [UNION](Help%20System/GSTARCAD/2025/Commands/U/UNION.md) **System Variables：** - [AREA](Help%20System/GSTARCAD/2025/System%20Variables/A/AREA.md) - [DELOBJ](Help%20System/GSTARCAD/2025/System%20Variables/D/DELOBJ.md) --- [Original help](https://www.gstarcad.net/help/GstarCAD_2025_en-US/detail/commandReferences/Commands%20about%20Regions%20and%20Areas.html) · © Gstarsoft Co., Ltd.