Originally Posted by MarkThailand

If you have the Speedplay Zero or Lightaction pedal/cleats, you can adjust the rotational degree of freedom from 0 to 15 degrees.

This means that you can adjust your feet's rotational freedom about the cleat verticle axis by either screwing in or out the cleat adjustment screws to decrease or increase, respectively, the rotational degrees which you can pivot your feet (a complete rotation is 360 degrees).

Thus, with both cleat adjust screws unscrewed half-way, you should be able to move your toes in or out by about 7.5 degree in and 7.5 degrees out.

If you want to only be able to have your toes point inward, all you need to do is screw in the front screw all the way in and screw out then back screw up until the center point - then I think that you should have feet point ability from parallel with the bike and up to 15 degrees in.

Or, if my geometry is wrong, then please divide degree values by 2.

Mark