Apart from imports of products from overseas, there have been a number of commercial products licensed to be made especially for the Australian market. Over the decades, the national broadcaster, the ABC, has produced a variety of items and promoted them vigorously on-air and in its shops. Several have basically been reprints of British products with the ABC logo on the covers replacing a British one, such as an Australian edition of what in Britain had been the "Doctor Who 20th Anniversary Special" (in 1983). There was also a "Technical Manual" with supposed plans of Daleks, robots, the TARDIS, guns, K9 and sundry aliens.