Designed for teens and younger students, this video employs "Punctuation Agents" Sam and Sabrina to find and discuss the common punctuation made by several other characters who appear in this program. As they analyze a typical grocery list and a student's play, the agents point out common errors that can be easily corrected if specific grammatical rules are followed. Topics covered include the proper use of quotation marks, participial phrases, semicolons, and different types of sentence clauses. Part of a three-volume series on effective writing. The other two titles address writing grammatical sentences and paragraphs. ~ Elizabeth Smith, All Movie Guide