This document discusses the proper use of commas in sentences. It notes that commas help avoid collisions between parts of sentences and prevent changes in meaning. It then provides rules for using commas with coordinating conjunctions joining independent clauses, after introductory clauses or phrases, between items in a series, and between coordinate adjectives not joined by "and." Examples are given to illustrate each rule.

1. Commas Notes Set #1

4. When to Use Commas--Part I