 Here, "diafilms", slides for teaching use, were also produced, as were television commercials.As far as the distribution of films is concerned, after the nationalization of movie theatres (only 35 mm ones, as 16 mm theatres did not exist), it was concluded that many had to be shut down because of their decaying state or because of their physically obsolete equipment.A crisis followed, there being a shortage of theatre administrators and projectionists that forced films in some counties to be shown only outdoors.