Digital BW, The Print

I've just started messing with QTR and am very pleased with the results so far. I have 
downloaded all of Carl Schofields profiles and have come up with another stupid 
question. I am sure the answer is available somewhere in the posts to this forum, but 
I haven't found it yet.

What are the real names of the papers designated as PFA, PPM and SPE.

Thanks for an answer

Doug Nielsen