I was reading on bicycling.com, a slideshow on ways to ride faster, and came to #6: http://www.bicycling.com/speed/slide6.html.
"6. Anchor your ankles. Improve your pedaling efficiency and put more pushing power directly into your pedals by keeping your ankles in a neutral, or pillar, position. A recent study discovered that when riders pedaled with their ankles dorsiflexed, or with the foot flexed upward, their pedaling efficiency dropped nearly 3 percent. Worse, their calves expended 37 percent more energy while pushing the pedals in that position. Keeping your ankles straight gives you a more solid platform on the pedals and can improve efficiency, reduce muscle fatigue and help maximize your power output."

I am trying to form an image in my mind of this concept. I recall here on TE it had been encouraged to use a range of motion similar to wiping mud off the bottoms of the shoes. That described movement I have tried to practice when riding.

Is the bicycling site describing the same or a different motion? I am having a brain freeze!