Good evening. I want to use 18F452 with "XT" oscillator mode (4 MHz xtal)

I have read the thread "18F Config fuses", and there is just one question in my mind :

If I use the statement "config OSC=XT" in MPASM,
then I do NOT have to write into "CONFIG1H" ?
( I think the "XT oscillator" corresponds to a value of 0x21 )

Is there any way to confirm this, watching the CODE.HEX file ?

Thanks. Ramon.