# REDEFINE Command [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [Commands](Help%20System/GSTARCAD/2027/Commands/(Commands).md) **Function Description:** This command is used to restore internal commands that turned off by the UNDEFINE command. If a command is turned off by the UNDEFINE command, users can reuse it by this command. **Command Access:** > **Icon:** / > **Menu:** / > **Ribbon:** / > **Toolbar:** / > **Command:** REDEFINE > **Alias:** / **Command Prompts:** ``` Enter command name: ``` --- **Related References：** - [Commands about Customizing the Drawing Environment (GstarCAD 2026)](../../2026/Commands/Commands%20about%20Customizing%20the%20Drawing%20Environment.md) --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/commandReferences/REDEFINE.html) · © Gstarsoft Co., Ltd.