# REDEFINE Command [GstarCAD 2019](Help%20System/GSTARCAD/2019/Index.md) → [Commands](Help%20System/GSTARCAD/2019/Commands/(Commands).md) → [R](Help%20System/GSTARCAD/2019/Commands/R/(R).md) The REDEFINE command is used to restore internal command that turned off by the UNDEFINE command.. ## Command Access: > **Command:** REDEFINE ## Command Prompts: > Enter command name: ## Function Description: If one command is turned off by the UNDEFINE command, users could reuse it by this command. ## Other versions with matching text [GstarCAD 2016](../../../2016/Commands/R/REDEFINE%20Command.md) · [GstarCAD 2017](../../../2017/Commands/R/REDEFINE%20Command.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/Commands/R/REDEFINE%20Command.md) · [GstarCAD 2020](Help%20System/GSTARCAD/2020/Commands/R/REDEFINE%20Command.md) · [GstarCAD 2021](Help%20System/GSTARCAD/2021/Commands/R/REDEFINE%20Command.md)