# Commands about Regions and Areas [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：** - [BOUNDARY (GstarCAD 2026)](../../../2026/Commands/B/BOUNDARY.md) - [INTERSECT (GstarCAD 2026)](../../../2026/Commands/I/INTERSECT.md) - [MASSPROP (GstarCAD 2026)](../../../2026/Commands/M/MASSPROP.md) - [REGION (GstarCAD 2026)](../../../2026/Commands/R/REGION.md) - [SUBTRACT (GstarCAD 2026)](../../../2026/Commands/S/SUBTRACT.md) - [UNION (GstarCAD 2026)](../../../2026/Commands/U/UNION.md) **System Variables：** - [AREA (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/A/AREA.md) - [DELOBJ (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/D/DELOBJ.md) --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/commandReferences/Commands%20about%20Regions%20and%20Areas.html) · © Gstarsoft Co., Ltd.