I've posted to issue here :
I've read the new release-notes, 1.4.1rev-B, and they are indeed much clearer. Thank you for this. I fail to understand though, why the choice has been made to change the meaning of transparency depending on the value of the optional OPAQUE-attribute. Shouldn't transparency always mean 1=transparent, 0=opaque? A "high" value of transparency should equal transparent... highly transparent.
This may be nitpicking but I feel it's currently a source for confusion.