header
n. countablen. a piece of information at the top of a page or a computer file. It usually contains the title, date, or page number so you can find what you need quickly.
n. a block of text or data placed at the top of a document, page, or electronic file. In technical contexts, it contains metadata necessary for processing the subsequent data stream.
Please include your name in the header of every page.
The website's header contains the main navigation menu and the company logo for easy access.
The software failed to process the incoming data because the packet header was corrupted during transmission, preventing the system from identifying the file type.
From head + -er.
Commonly used in word processing and web development to refer to the top section of a layout.