Ok, just remember...there's no such thing as a dumb question. (So why do I feel this is?)

Does anyone know for sure what the "dot" switch positions at the far extremes (hot and cold) of the temperature control wheel set?

I have looked relentlessly through my owner's manual and it does not say. My guess is it is either max cold or max hot, but it does not seem to make much difference whether I have the wheel spun to the coldest temp setting without rolling it into the "dot" position or whether I roll it "over the hump" into the dot position. I haven't ever found need to set the temp to full hot so I don't what that would do.

Thanks