The article, “A Note on Screens’ Worldwide Adoption and Successes,” discusses the development of screens and their adaptation around the world over the last two decades, with a particular emphasis on their use by Central and South American countries. Screens analyze data on variables – such as prices, volumes, and market shares – that measure market outcomes to detect potential anticompetitive behavior, and they were used to flag possible manipulation in foreign exchange and the London Gold and Silver Fixings.