Were HID's an option? What are xenon headlights? I am familiar with the xenon bulbs, but was there an option for "xenon" HID'S on the '98 w210?

I have just bought one and it is being shipped to me, the PO doesn't know what kind of headlights it has. How can I tell what it has? Looking at the pic's they don't appear to be projectors. If it has HID it would be the projector style, correct? If not, would I be better off with some aftermarket projectors? The car has a leather interior, would the HID's have come as part of a package with the leather?

I know this is a lot of questions but I haven't been able to find my answers by searching

Thanks in Advance,

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Muleears
'07 E320 Bluetec 133K my DD
'04 Jaguar XJ8 VDP, 34K
'10 Hyundai Accent 60K Grocery Getter
'02 VW Golf soon to be on the road again
'97 E300 Diesel Son's DD
'61 VERY tolerant wife

Hampton Roads, VA USA

Gone but not forgotten:
'67 250S 95K
'86 300SDL
'87 300D Turbo, 364K! R.I.P.
'98 E300 Turbodiesel, 213K
'02 S420, 164K
'01 Prius 138K