Not sure if this is what you want, but it's a short read anyway; search for Second Sources: * http://www.ganssle.com/tem/tem288.html http://www.ganssle.com/tem

Not sure if this is what you want, but it's a short read anyway; search for Second Sources: * http://www.ganssle.com/tem/tem288.html http://www.ganssle.com/tem/tem288.html * http://www.ganssle.com/tem/tem289.html http://www.ganssle.com/tem/tem289.html