The document provides guidance on proper formal writing style. It advises against using informal, vague, slang, redundant, or cliché words and phrases. Specifically, it indicates words like "stuff", "thing", contractions, informal pronouns, sentence starters like "well" and "so", phrases referring to the author or piece, and clichés should be avoided. Formal academic writing should use precise, clear language without redundant or vague terms.