<ul>
<li>Start from RRmRmRRmRvLmRv
(equivalent to I2 of [Nourse])
<li>Fold it into a 2x1 rectangle of two stacks of four tiles (a northern stack and
a southern stack) in such a way that:
 <ol>
 <li>The top tile of the northern stack is of type <i>backslash</i> (nylon wires in direction
     NW to SE)
 <li>The top two tiles of the northern stack are the two flaps of the starting configuration
 </ol>
<li>Turn west 180 degrees the two lower tiles of the two stacks (turn down and then left)
<li>Lift 90 degrees the top tile (flap) of the former northern stack and roll it 90 degrees
towards West together with its two adjacent tiles
<li>rotate down 90 degrees the two lower adjacent southern tiles into the final shape
</ul>