You encounter signs throughout your daily life. For example, you look at a hanging board at a train station to find the track number for your train, or you look at a directory at a department store, or a directory at a hospital for the correct treatment office, and you look for the classroom number at a school. All of these directories and indicators are "signs". A signboard placed in front of a store, a non-smoking sign, a restroom sign with figures of a man and/or a woman are also "signs".
When you drive, you see traffic lights, traffic and road signs, centerlines, crosswalk indications, taillights and the turn indicator of a car in front of you. Also, you look at a speedometer and the fuel gauge. All of these are "signs".
A "sign" provides reliable and concrete information in order for people to take action.
A "sign" is a familiar and an indispensable part of human life and the world of "signs" is actually vast and profound. Here, we would like to introduce various aspects of "signs" in accordance with their functions.
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