I stand corrected. I read and understand such devices, but it's been so long since I had to formally identify them that I just go for the basics. As an aside, as time goes on, I find myself valuing more and more the ability to read and write beyond the purely literal. The literal can be so inelegant and inefficient, but sometimes it feels like anything beyond the literal can be perceived almost as a foreign language, and if the person with whom one is communicating never learned that language, it's all Greek. I suppose its like an add-on to one's language that's learned in Literature classes, or rhetoric classes, or Classics.