This document discusses the key properties of texts: adequacy, coherence, and cohesion. Adequacy refers to a text appropriately adapting to its intended audience, subject, and context. Coherence involves logical organization and progression of ideas within a paragraph. Cohesion provides flow between sentences through mechanisms like repetition, pronouns, and transition words. The document also examines models of texts like descriptions, narratives, expositions, and arguments. It outlines the writing process of gathering, organizing, drafting, editing, and publishing information.