Thanks go to the following people for suggesting improvements of this document or even contributing part of it:
Dale Amon, Randolph Bentson, Andries Brouwer, Lennert Buytenhek, dath@sequent.com, Michael Gende, Davide Giunchi, Josef Höök, Alexander S. A. Kjeldaas, Allan Latham, TheSpectra (AKA Pablo Lorenzzoni), Gary E. Miller, Richard Polton, Rik van Riel, Mark Ryan, Todd Sabin, Kurt Seifried, Gisle Sælensminde, Pim Snel, A. Steinmetz, Lion Templin, trb@eastpac.com.au, Stephen C. Tweedie, Doobee R. Tzeck, Erik Walthinsen, Frank v Waveren