of the Air. Originally the teachers communicated with the children via radio, but now satellite telecommunication is used instead. Some children attend boarding school, mostly only those in secondary school. Terminology The term "outback" derives from the adverbial phrase referring to the back yard of a house, and came to be used meiotically in the late 1800s to describe the vast sparsely settled regions of Australia behind the cities and towns. The earliest known use of the term in this context in print was in 1869, when the writer clearly meant the area west of Wagga Wagga, New South Wales. Over time, the adverbial use of the phrase was replaced with the present day noun form. It is colloquially said that "the outback" is located "beyond the Black Stump". The location of the black stump may be some hypothetical location or may vary depending on local custom and folklore. It has been suggested that the term comes from the Black Stump Wine Saloon that once stood about out of Coolah, New South Wales on the Gunnedah Road. It is claimed that the saloon, named after the nearby Black Stump Run and Black Stump Creek, was an important staging post for traffic to north-west New South Wales and it became a marker by which people gauged their journeys. "The Never-Never" is a term referring to remoter parts of the Outback. The Outback can also be referred to as "back of beyond" or "back o' Bourke", although these terms are more frequently used when referring to something a long way from anywhere, or a long way away. The well-watered north of the continent is often called the "Top End" and the arid interior "The Red Centre", owing to its vast amounts of red soil and sparse greenery amongst its landscape. Transport The outback is criss-crossed by historic tracks. Most of the major highways have an excellent bitumen surface and other major roads are usually well-maintained dirt roads. The Stuart Highway runs from north to south through the centre of the continent, roughly paralleled by the Adelaide–Darwin railway. There is a proposal to develop some of the roads running from the south-west to the north-east to create an all-weather road named the Outback Highway, crossing the continent diagonally from Laverton, Western Australia (north of Kalgoorlie, through the Northern Territory to Winton, in Queensland. Air transport is relied on for mail delivery in some