Navigation wiki:
>This article concerns navigation in the sense of determination of position and direction on the surface of the Earth. See Navigation (disambiguation) for other meanings. There are several traditions of navigation. In the pre-modern history of human migration and discovery of new lands by navigating the oceans, a few peoples have excelled as sea-faring explorers. Prominent examples are the Phoenicians, the Ancient Greeks, the Malays, the Arabians, the Norse and, perhaps more than any others, the peoples of the Pacific Ocean, particularly Polynesians and Micronesians.
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sign wiki:
n can denote any of the following: In astrology sign is often used to mean the Sun sign.In communication sign or signing refers to communicating via hand gestures, such as sign language.In computing, the digits where one bit among them tells the number is either negative or non-negative are called signed, otherwise unsigned. See also: SignednessIn divination a sign is an omen, an event or occurrence believed to fortell the future. In linguistics, Ferdinand de Saussure described a Sign (linguistics) as a combination of a concept and a sound-image.In mathematics, the sign of a number refers to whether it is negative or positive.In medicine, a medical sign is objective evidence of the presence of a disease or disorder, as opposed to a symptom, which is subjective.In semiotics, sign (semiotics) are the basic units of meaning.Information signs are notices that instruct, advise, inform or warn people.On (the side of or above) roads there are traffic signs to instruct drivers. In most parts of the world these include stop signs, speed limit signs, cross walk signs, and others. Within a writing system, a sign is a basic unit. Similar terms which are more specific are character, letter or grapheme.Commercial signage, including flashing signs, such as on a retail store, factory, or theatre.To write one's signature on a document, thus showing authorship and will.
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