When I’m surfing the Net at work while waiting for something to do, I try to keep it at least somewhat work related, which means news sites and grammar blogs. And today, my two favorite things — U2 and grammar (I’m a geek, OK?) — converged in one place. Bill Walsh, copy chief at The Washington Post and author of a couple of my favorite books on copy editing, posted this “sharp point” on his blog, using the cover of “Rattle and Hum” to illustrate his point on colons and subtitles.

“Do you see a colon in the title of that movie? Does it matter? Of course not, I say in a new SHARP POINT.”