Mark wrote and Jason followed up with:
I would like to see the circle with a horizontal line through it with either the top or bottom shaded in to indicate which side is up. I believe that this symbol started with either the Spanish or Italians. I would like to see it as standard. Forgive my ignorance, but I am not quite sure what new information this symbol is supposed to convey. If I see origami diagrams that are drawn with two different colors distinguishing the two sides, is it not obvious from the color of the paper in the first step (and the color of the finished model in the last step) which side is up? Perhaps you can explain it to me. I for one find this incredibly useful information as not all diagrams are drawn in 2 different colors. Sometimes diagrams are hand drawn and not shaded so this newish symbol can be useful. Andrew