Center Spread?

[melm]

Back with my previous processors Dolby offered different surround modes for music, movies, etc. Now those seem to be gone in my RMC-1L. (Probably a decision from Dolby). There is only one setting I can see, which is center spread on and off. It isn't mentioned at all in the RMC-1L manual that I can find. I searched the web and understand what it is. But what happened to the other modes? I tried center spread and in my room and it exaggerated separation a bit too much.

Thanks