Help with config fuse?

[polymer52]

I'm confused about the config or fuses or whatever they are. Doesn't the @ mean that an asm code follows?
Do I always need to include the IC file? Like 12F675.inc?
I've seen some done in caps and some not. The PBP manual mentioned something about different assemblers needing caps.
Also some are entered in a single line like this:

@ DEVICE pic12f675, intrc_osc_noclkout, wdt_off, pwrt_on, mclr_off, bod_off, protect_off

and some on individual lines like this:

@ DEVICE pic16F628, INTRC_OSC_NOCLKOUT
@ DEVICE pic16F628, WDT_ON
@ DEVICE pic16F628, PWRT_ON
@ DEVICE pic16F628, MCLR_OFF
@ DEVICE pic16F628, BOD_ON
@ DEVICE pic16F628, LVP_OFF
@ DEVICE pic16F628, CPD_OFF
@ DEVICE pic16F628, PROTECT_OFF

Does it matter which I use?