Text linguistics, also known as written discourse analysis, seeks to analyze texts beyond the level of the sentence, typically but not necessarily in their situational context. Text linguistics tends to focus on the patterns of how information flows within and among sentences by looking at aspects of texts like coherence, cohesion, the distribution of topics and comments, and other discourse structures. Much like syntax is concerned with the structure of sentences, text linguistics is concerned with the structure of texts.

"The linguistic analysis and description of extended texts, either written or spoken. " -- From The Concise Oxford Dictionary of Linguistics