Talk to any Broadway veteran for a few minutes, and you’ll be sure to get an earful of the strange and wonderful behind-the-scenes world that most theatre-goers never get a chance to experience. So it’s almost surprising that an “inside Broadway” walking tour has only just sprung up in Manhattan. “Throughout the tour, one’s attention is brought to things even the most eagle-eyed pedestrian can miss. These include the comedy/tragedy gargoyles adorning the Lunt-Fontanne; the diminutive shoeprints of actress Helen Hayes in the sidewalk in front of the theater that bears her name; and the elaborate mural depicting various theater greats adjoining the Marriott Marquis Hotel.”