Here's a couple of pictures I thought I'd throw in. In the first picture, note how the ankle joints can be angled inwards so that the feet remain flat on the ground even when the legs are open in an 'A' pose.
The second pictures shows a close up shot of the side panel covers, which can be deployed in Battroid mode. I should point out that having the side panels open is optional as they don't effect transformation whether they are open or closed.
Click on the pictures below for larger images.