The following public-service announcement, posted in New York City subway cars, reminded commuters what to do with a used newspaper at the end of the ride:
Please put it in a trash can; that’s good news for everyone.
The semicolon in the subway announcement separates two clauses that could have been written as separate sentences. Semicolons, which create a pause stronger than that of a comma but not as strong as the full pause of a period, show close connections between related ideas.