English as a second language; ESL; TESOL ; Zweitspracherwerb (Textproduktion) ; Second language acquisition (text production) ; Text production (second language acquisition) ; Topik/Prädikation; Topic/comment; Theme/rheme; Thema/Rhema; Satzperspektive; Given/new; Funktionale Satzperspektive; Functional sentence perspective; Focus/background; Communicative dynamism; Theticity; Information structure ; Informationsdichte (text.) ; Information density (text.) ; Information content (text.) ; Cohesion (text.) ; Kohäsion (text.) ; Coherence (text.) ; Kohärenz (text.) ; Text constitution ; Thematische Diskontinuität; Thematic discontinuity; Thematic progression ; English