
However, if as you are saying the idea is probably to work with just one picture in RAW, why do they keep referring to bracketing the shots to be used, as that results in several pictures?
I am not saying you are wrong, just trying to get to the bottom of it by asking stupid questions

I can easily see why taking just one picture and doing several tweaks and then saving each of the tweaks as a seperate picture, then finally merging everything at the end would give such a result, but I am sure that you could achieve the same thing using layers in PSP and modifying each one before a final merge, must give it a try to find out

Maybe the HDR merge feature is just a shorter way of achieving the same result?
I think that your logic and explanation of your tomb picture is exactly what you are meant to achieve for this HDR technique, it is exactly how you are meant to do it that is still not clear to me.
