the widest spots,(nips) are the most heavily traded price,the narrowest(cleavage) are similar to gap fills,the ledges are where a large buyer or seller sat on or parked under a market,the first and last (nip /ledge)should have residual buyers or sellers that would be happy to scratch a trade or remove a hedge at zip,meaning that if we are dropping towards one the buyers wont step up,thus a magnet...recognize those 3 areas and your good to go