This document discusses parallel structure and its importance in writing. Parallel structure involves using consistent patterns of words, such as words, infinitives, prepositional phrases, and subordinate clauses, to improve writing flow, clarity, balance, and enjoyment. There are five ways to use parallel structure: 1) joining elements with coordinating conjunctions, 2) joining elements in lists or series, 3) comparing elements, 4) joining elements with linking verbs or verbs of being, and 5) joining elements with correlative conjunctions. Examples are provided to illustrate proper parallel structure usage.