Exemplum

A page from Libro de los exemplos por a. b. c. [es] by Clemente Sánchez de Vercial [es]

An exemplum (Latin for "example", pl. exempla, exempli gratia = "for example", abbr.: e.g.) is a moral anecdote, brief or extended, real or fictitious, used to illustrate a point. The word is also used to express an action performed by another and used as an example or model.