This document provides a thorough overview of common punctuation marks including periods, commas, colons, semicolons, and apostrophes. It explains the rules for using each mark and provides examples. The full stop is used at the end of sentences. Commas separate clauses and items in a list. Colons introduce lists and add further explanation. Semicolons separate items in a list or clauses of equal weight. Apostrophes show possession and omission of letters. The document ensures the reader has a solid understanding of basic punctuation.