This document outlines 14 rules for using commas in writing. It begins by stating that commas act as screens that allow information to be seen through but not passed. It then provides Sturg's 14 comma rules, which cover using commas before conjunctions in compound sentences, separating introductory clauses, setting off words like "yes" and "no", setting off questions at the end of statements, separating titles and dates, contrasting elements, omitting words, separating items in a series, coordinate adjectives, interrupting clauses, non-essential clauses, direct quotations, affiliations, and similar words. It concludes by noting that people strongly disagree on Oxford commas and coordinate adjectives, and that following grammar rules strictly is