At the end of paragraph 4.4 it is said that Albrecht Neubert, who is interested in text linguistics, emphasizes that his work can provide insight and also serve a practical end. How would text linguistics do this?
Think of a few different types of text and consider to what extent they are primarily informative, expressive and/or operative (i.e. persuasive). Draw a triangle with INFORMATIVE at the top, EXPRESSIVE bottom left and OPERATIVE bottom right. Where in the triangle would you place a reference work, a sermon, an academic lecture, a lyrical poem?