The promise that the leaflet appeared to make in its opening sentence was not supported by the rest of the leaflet.

Again, I made that point in my original post about it, Keith. You have to remember that the reason these leaflets have large print and few words on one side is not because they think the recipients have startlingly poor eyesight. It is so the leaflet can be put in the window as a poster. Whereupon passers-by only get to see one side: the one with the promise.