Digital BW, The Print

Roy, I'm having a ball with QTRgui ...BUT...

Please explain in simple terms (I'm simple) the meaning and advantage
of a "pure gray lab working space" 

The beauty of QTRgui seems it's unique ability to let us step away
from jargon-ridden methodologies, eliminating the necessity for
profiles... 


> I have a new download of a pure gray lab working space and printing
> profiles that take advantage of the color management system.   So there
> are icc profiles for printing with QTR that do "perceptual intent"
conversion
> of your grayscale images.