Well, that's the theory, anyway. Apparently it is more usual to put a board with an escape in underneath the super, and put a solid board on the top. Because I don't have any solid boards (note to self: make one!) I had to use a crown board with a bee escape in upside-down.
Unless, of course, I've put them in arsy-versy, in which case all the bees will be trapped.
The boards were put in on Wednesday evening, so Plan A says I collect the super, minus the bees, on Saturday...
Pic stolen from the excellent http://www.dave-cushman.net/bee/port.html, David Cushman, who clearly has as many computers as bees.