# GC_BOOLOP Command [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [Commands](Help%20System/GSTARCAD/2027/Commands/(Commands).md) → [G](Help%20System/GSTARCAD/2027/Commands/G/(G).md) ## Function Description: This command includes UNION, SUBTRACT and INTERSECT. The Boolean Operation Option dialog box is displayed as shown below. ## Command Access: > **Icon:** ![](Help%20System/GSTARCAD/2027/assets/5ca2e87396748b3b60137b09f4916c2400b82a71adf0bc967d9c12d1f939d8a4.png) > **Menu:** Modify > Pline Boolean > **Ribbon:** Home > Modify > Boolean > **Toolbar:** / > **Command:** GC\_BOOLOP > **Alias:** / **Command Prompts: /** --- **Related Tasks：** - [To Work with GC\_BOOLOP (GstarCAD 2026)](../../../2026/Commands/01%20Procedures/To%20Work%20with%20GC_BOOLOP.md) --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/commandReferences_G/GC_BOOLOP.html) · © Gstarsoft Co., Ltd.