The document discusses parallelism in writing and provides examples of parallel and non-parallel structures. It defines parallelism as balancing similar words, clauses, or phrases. It provides rules for using parallel structures when joining items with conjunctions, in comparisons, and with commonly paired words. Examples are given of correcting non-parallel structures and choosing between parallel and non-parallel options. The document encourages reviewing others' work and using various activities to learn about and practice parallelism.