Digital BW, The Print

I've just downloaded the latest version of QTRGui, which is 0.3.41.

There are quite a lot of improvements - I'm amazed at how fast Stephen
improves this program.  Can I yet again express my appreciation.

I have a question.  How many of the new improvements work now with QTR
for PC 2.0 beta 3?  For example, I thought that roll paper was waiting
for some changes to QTR?

There are a number of other features I'd like to understand better
before I launch in and burn up ink and paper.  

Like what does "Media Type" do that one doesn't do through specifying
the profile under curves?

I'd also like to understand "Ink Limit Adjustment" and "Gamma
Adjustment" better, beyond the recent discussions that I've seen and
what is in the QTRui helpfile.

And "Resolution".  Based on recent posts, I thought that this was
fixed in QTR?

F_P