Digital BW, The Print

Roy (or anyone else who can answer the question)

Stephen Billard's latest version of QTRGui allows PC users to set even
more of the QTR options that exist in the PPD file (Epson 2100/2200).

There are a couple that I don't understand, and can't find the answer
in any documentation.

I don't understand what the media type setting does that the curves
don't.  I would have thought that by choosing the two curves and the
blend %, I would be telling QTR all that it needed to know about the
paper.  What effect does the "Media Type" setting have?

Related to this, is there any reason why semi-gloss (or smooth pearl
for ilford users) not listed as one of the media types?

Also, roll paper is a new option in QTRGui.  I did't think that this
was supported in PC QTRGui 2.0 beta 3.  Will this option work, or are
we still waiting, and QTRGui is just a little ahead of the game?

Thanks

Ferdinand in Paris