Semaphore is a signaling system used to communicate over long distances using visual signals. It typically involves the use of two flags, which are held in specific positions to represent letters or numbers. Semaphore signaling is often associated with maritime communication, where sailors or operators would use the flags to send messages between ships or from ships to land. The system relies on clear visibility, and the position of the flags indicates different messages or instructions. While semaphore is less commonly used today, it was an important method of communication before the advent of radio and other modern technologies.

What is "semaphore"?

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