"Writing is a medium of human communication that represents language with signs and symbols. For languages that utilize a writing system, inscriptions can complement spoken language ...
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by creating a durable version of speech that can be stored for future reference or transmitted across distance. Writing, in other words, is not a language, but a tool used to make languages readable. Within a language system, writing relies on many of the same structures as speech, such as vocabulary, grammar, and semantics, with the added dependency of a system of signs or symbols. The result of the activity of writing is called a text, and the interpreter or activator of this text is called a reader." - (en.wikipedia.org 29.11.2019)