You’ve seen people indicate emphasis by putting a period after each of several words, and capitalizing the first letter of each word. A Michigan listener wonders how this stylistic trick arose. Her question was prompted by this description of French model-turned-presidential-spouse Carla Bruni: “She’s got a cashmere voice and a killer body. Plays decent guitar and writes her own lyrics. Can hold her own with queens and statesmen. She. Must. Be. Stopped.” Jealous much? This is part of a complete episode.