L.E. flaps-do they work?
Well we can argue about this all day, however I work for Boeing/McDonnell Douglas and I am sure of what their designations are. One final thing, for boundary layer control on the F-4 there were a series of small holes that were exposed when the leading edge flaps were extended that blew engine bleed air into the boundary layer to reinforce it to help prevent separation.
Just another item to help keep the discusion interesting.
Larry