Johanna Maria IJssel de Schepper-Becker (1885 – 1973) was a Dutch novelist. Her play WAT NIET MAG… (MUSN’T DO IT!) was the first play to treat homosexuality as an inborn condition and “coming out” as an act of self-realization. Previous treatments of the subject, in contrast, found gay characters being “outed” as a result of, in the words of Laurence Senelick, “blackmail or vice-squad raids or the maneuvers of jilted lovers.”