E,S&L contrasts the proper and improper use of commas, effectively showing their impact on understanding.
This is a children's version of Lynne Truss's adult book, by the same title. It presents 13 examples of comma abuse (14, if you count the title) and their corrections, using sentences that are humorous when incorrect. For example, "Slow, children crossing" is a partial sentence of two independent phrases. However, without the comma the word slow in "Slow children crossing" becomes an adjective that modifies children. All thirteen examples are explained at end of the book.