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Radio comics Bob & Ray began a parody of game shows with the introduction, “Our first guest signs his card, “Maitland R. Montmorency.’ ” The guest then announced, “Actually, my name is John W. Norbiss. I have terrible handwriting.” These days, with most communication being accomplished via phone, keyboard, or worse, mouse, the basic skill of coherently manipulating a pen seems in danger of going the way of the powdered wig—though many of those wig-wearers had elegant signatures, didn’t they? At “The Graceful Envelope: The Art of Calligraphy,” a workshop and display, pen-and-ink professionals will demonstrate the craft your third-grade teacher was trying to instill. From 1:30-4 p.m. at the National Postal Museum, 1st & Massachusetts Ave. NE. FREE. (Dave Nuttycombe)