also: ヘッダ
Refers to the top section of a document, email, webpage, or data structure. Common in IT and office contexts.
The sender's information is displayed in the email header.
この書類のヘッダーには日付とページ番号を入れてください。
Please put the date and page number in the header of this document.
I set up the header for the page in Excel.
I displayed the company logo in the header.