I can only speculate, but I think it works like this, whenever you want to get rid of a hotkey, you either reset all its values to false/empty/1 and <Code>key_00</Code> or you can even fully delete all block   <OneHotKey>             <ID>INC_OPACITY</ID>             <Room></Room>             <Code>key_00</Code>             <Ctrl>false</Ctrl>             <Alt>false</Alt>             <Shift>fa