During the various iterations, the following friendly people have provided bug reports and improvements to the document: Mikael Olsson, Remi Gacogne, Benjamin Kircher, saivlis, florin-andrei-tp, Brett Anthoine, Nick Parlante, Matthew King, Nicolas Peels, Jon Forrest, sbrickey, Marcin Olak, Gary Rowe, Ben Frain, Mats Linander, Raul Siles, Alex Lee, Richard Moore