00A.

Before applying a rabbit-ear-fold, you need to look for a triangular region.

In a typical square-paper (shown on the left), you can have either an upper triangular region or a lower triangular region.

If we have a vertical dotted line instead, then we will have a left triangular region and a right triangular region instead.

In this example, we will choose the upper triangular region but you can choose any region.

00B.

The symbol for rabbit-ear-fold is represent with three valley-fold lines meeting at the center.

Thus, it is the same as "outside reverse-fold" since they both share three valley-fold lines.

The difference is if the center is folded or not.

If the center is folded, then it is the "outside reverse-fold" .

If the center is unfolded, then it is the rabbit-ear-fold.