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+Preface xix 
+There were substantial revisions to the chapters on index options as well. Part 
+of the revisions are due to the fact that these were relatively new products at the time 
+of the writing of the second edition; as a result, many changes were made to the prod­
+ucts - delisting of some index options and introduction of others. Also, after the crash 
+of 1987, the use of index products changed somewhat (with introduction of circuit 
+breakers, for example). 
+FOURTH EDITION 
+Once again, in the ever-changing world of options and derivatives, some new 
+important products have been introduced and some new concepts in trading have 
+come to the forefront. Meanwhile, others have been delisted or fallen out of favor. 
+There are five new chapters in the fourth edition, four of which deal with the most 
+important approach to option trading today - volatility trading. 
+The chapter on CAPS was deleted, since CAPS were delisted by the option 
+exchanges. Moreover, the chapter on PERCS was incorporated into a much larger 
+and more comprehensive chapter on another relatively new trading vehicle - struc­
+tured products. Structured products encompass a fairly wide range of securities -
+many of which are listed on the major stock exchanges. These versatile products 
+allow for many attractive, derivative-based applications - including index funds that 
+have limited downside risk, for example. Many astute investors buy structured prod­
+ucts for their retirements accounts. 
+Volatility trading has become one of the most sophisticated approaches to 
+option trading. The four new chapters actually comprise a new Part 6 - Measuring 
+And Trading Volatility. This new part of the book goes in-depth into why one should 
+trade volatility (it's easier to predict volatility than it is to predict stock prices), how 
+volatility affects common option strategies - sometimes in ways that are not initially 
+obvious to the average option trader, how stock prices are distributed ( which is one 
+of the reasons why volatility trading "works"), and how to construct and monitor a 
+volatility trade. A number of relatively new techniques regarding measuring and pre­
+dicting volatility are presented in these chapters. Personally, I think that volatility 
+buying of stock options is the most useful strategy, in general, for traders of all levels 
+- from beginners through experts. If constructed properly, the strategy not only has 
+a high probability of success, but it also requires only a modest amount of work to 
+monitor the position after it has been established. This means that a volatility buyer 
+can have a "life" outside of watching a screen with dancing numbers on it all day. 
+Moreover, most of the previous chapters were expanded to include the latest 
+techniques and developments. For example, in Chapter 1 (Definitions), the entire 
+area of option symbology has been expanded, because of the wild movements of