In otherwords in english that means that, when your sitting at idle, your motor needs to strugle to push all your accesories. Although, I don't think your power steering fluid really thins out that much. In any case, your car really doesn't have as much power to run your alternator, so all the parasitic drag off your power steering, basically steels all the belt speed used to push your alternator, therefor, your not getting as much power to run your motor, it's almost like running on an almost dead battery.

And actually on a side note, even once your car is warm, turning the wheel while standing still will affect your idle, but generaly in the opposite way, your IAC will bump your idle up a couple hundred to compensate for the extra load. This same thing will happen if you pump your brakes a couple times while sitting still as well.

Later......