The document discusses the role and responsibilities of a sub-editor in publishing a newspaper or magazine. A sub-editor plays a central role in editing news stories and ensuring factual accuracy and quality writing. The key responsibilities of a sub-editor include selecting and editing news stories, correcting errors, improving writing, rewriting for clarity, translating content, formatting stories for pages, and proofreading before publication. Strong language skills, mental alertness, news judgment, composition ability, and decisiveness are important qualifications for a sub-editor.