What are some of the differences & how have they adapted over time? Register Now for FREESubscriber Benefits Register Now! Do it now to get all this: Access to Interactive Digital Editions Online Archives of Past Lessons & Teachers’ Guides Interactive Teacher Community Not Yet A Subscriber? Are there any items you need to buy regularly, such as lip gloss or shampoo? Following is a step by step guide on how to use and modify the Storyline Crossword game. For the comonad of a zipper, the extract operation is already defined as get. I’ll use the extend and duplicate comonad definition to complete the interface.