Composition (teaching of) ; Technical language (teaching of) ; Français fonctionnel; Teaching of technical language ; DaF; Deutsch als Zweitsprache; German as a second language; DaZ; German as a foreign language ; Zweitspracherwerb (Textproduktion) ; Second language acquisition (text production) ; Text production (second language acquisition) ; Transtextualität; Transtextuality; Hypertextualität; Hypertextuality; Hypotextualität; Hypotextuality; Intertextuality ; Text linguistics, contrastive; Textlinguistik, kontrastive; Contrastive text linguistics ; Discourse analysis (text.) ; Text analysis ; Cohesion (text.) ; Kohäsion (text.) ; Coherence (text.) ; Kohärenz (text.) ; Text constitution ; Sachtext; Scientific article; Sachbuch; Nonfiction; Technical discourse ; German