Allows an application-defined command to override an internal command.
You can only undefine built-in AutoCAD commands. You cannot undefine the following types of commands:
If an AutoLISP or ObjectARX application has redefined a command with the same name as a built-in AutoCAD command, the application-defined command is active.
You can restore an undefined command with REDEFINE.
To see a listing of command names and groups of an ObjectARX application, use the ARX command, and choose the Commands option.
The following prompt is displayed.
This undefined command can be redefined to perform another function.