| http://www.w3.org/ns/prov#value | - The display device may also be made to have any desired height, although a total height of from about 10 to about 10,000 ??m, such as from about 30 to about 1,000 ??m or from about 50 to about 300 ??m, may be used in terms of size and ease of use of the device.
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