Long description

A piece of paper shown at three different stages. At the first stage the paper is blank with a dotted line splitting the piece of paper in two. At the second stage, the piece of paper is folded along the dotted line, so the piece of paper is folded in half. In the third stage the piece of paper looks the same as it did in the first stage, but this time the left-hand side of the piece of paper is greyed out.