Text repeated at the top of every page is called a header footer signature line clip art

The missing word and the answer is header.

"Text repeated at the top of every page is called header."

A header or page header is a text or an image/text combination separated from the document body, used to show important information like page number, logos, author's information, titles, among others.

The opposite of a header is the page footer. Footers are commonly used to show information like page number.

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