Composition (teaching of) ; English as a second language; ESL; TESOL ; E-Mail; Voice mail; Chat; Computer-mediated communication ; Zweitspracherwerb (Textproduktion) ; Second language acquisition (text production) ; Text production (second language acquisition) ; Evaluation criterion (text.) ; Text production ; Südafrika (engl. Sprache in) ; South Africa (English language in) ; English in South Africa