Header
A header is a section at the top of a document, file, or message that provides key information like titles, metadata, or instructions, making it essential for organization and quick reference. In sports, it refers to the act of striking a ball with one's head, while in digital contexts, it's evolved to include web page tops or data packets in networking. This versatility highlights its role in both physical and virtual structures today.
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In computing, the HTTP header, a key component invented by Tim Berners-Lee in 1989 as part of the World Wide Web's foundation, carries information that enables seamless data exchange between browsers and servers—without it, the internet as we know it wouldn't function, handling over 5 billion daily requests.
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