an aide-mémoire

Notes or pictures that one uses to remember something. When I was studying for the test, I made an aide-mémoire of all the steps in photosynthesis.

(formal)

a piece of writing or a picture that helps you to remember something I write notes to myself and put them on the board. It serves as an aide-mémoire.

Name	Pronounced	Usage
Darien	DER-ee-ən, DAR-ee-ən	English
Macbeth	-	History
Sarvesh	-	Indian, Hindi, Marathi
Carwyn	-	Welsh
Pauleen	paw-LEEN	English (Rare)
Balcher	['ba:ltʃə]