# To Detach an Underlay [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [Commands](Help%20System/GSTARCAD/2027/Commands/(Commands).md) → [Procedures](Help%20System/GSTARCAD/2027/Commands/01%20Procedures/(Procedures).md) **To Detach an Underlay** 1. Click Insert > External References on the main menu. 2. The External Reference palette is displayed, in the File References panel, select the underlay you want to detach. 3. Right-click on the underlay and choose Detach. The underlay is no longer linked to the drawing file. All instances of the underlay are removed from the drawing. --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/commandReferences/To%20Detach%20an%20Underlay.html) · © Gstarsoft Co., Ltd.