|Data type||Range||Default value|
|REG_DWORD||0 | 1||1|
Determines whether the extensions to the command processor (Cmd.exe), such as chdir and setlocal, are enabled. Because the extensions might be incompatible with a command-script language, Windows 2000 lets you disable the extensions. This entry affects all extensions. You cannot use it to enable or disable extensions selectively. You can, however, disable extensions for a particular invocation of Cmd.exe by using the /E:OFF switch.
To change the value of this entry, use Command Processor (Cmd.exe).