This document discusses text linguistics and textual analysis. Text linguistics examines texts as communication systems and covers fields like pragmatics and discourse analysis. There are different types of texts like descriptive, narrative, and expository. Textual analysis involves parsing texts to extract facts, while text analytics mines texts for insights by representing textual content as structured data. Textual analysis prepares unstructured documents for analysis, while text analytics makes sense of that analyzed data. Principles for analyzing texts include reading critically, identifying important ideas, and writing a summary.