No pics but what it means is you drill holes into the sides of the box where the firewall is glued and install tooth picks and epoxy it locks the firewall to the sides of the box. The one thing that should be done with the funtana is you should glue tri stock all around the outside of the box where it is connected to the former. If you have a funtana you will know what I'm talking about, as you are looking at the plane from the front the box is glued or should be to the last former in the fuse,now cut at least 1/2 inch of the covering all the way around the box and glue on tri stock. On mine there were two little glue spots that held the bottom of the box in place and would not have held up to even a 90 bolted to it. Other than that follow the directions and you will have one nice flying airplane.