Originally Posted by Hadrien
Our PDF output used to be based on LaTeX but we switched to Prince XML a year ago. The new 7.0 version for Prince will have better hyphenation support (Liang's algorithm, like TeX), kerning and various typographical improvements. We'll move to Prince 7.0 as soon as the final version is available.
Very cool. I've read about Prince XML before. Can I ask what the reason for the move was?