Composition writing refers to the broad art and process of writing various types of non-fiction work, following a structured writing process including brainstorming, outlining, drafting, editing, and proofreading. Guided composition involves teachers providing students with the necessary structures and ideas to develop their writing skills, often through exercises aimed at enhancing their command of language and coherence in writing. The document outlines various exercises and principles for effective guided composition, emphasizing clarity, brevity, and adherence to central themes.