Add training workflow, datasets, and runbook

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+658 Part V: Index Options and Futures 
+tracts in order to help ensure that the market cannot be manipulated by someone 
+forcing the price to move tremendously in one direction or the other. Another rea­
+son for having trading limits is ostensibly to allow only a fixed move, approximately 
+equal to or slightly less than the amount covered by the initial margin requirement, 
+so that maintenance margin can be collected if need be. However, limits have been 
+applied to all futures, some of which don't really seem to warrant a limit - U.S. 
+Treasury bonds, for example. The bond issue is too large to manipulate, and there is 
+a liquid "cash" bond market to hedge with. 
+Regardless, limits are a fact of life in futures trading. Each individual commod­
+ity has its own limits, and those limits may change depending on how the exchange 
+views the volatility of that commodity. For example, when gold was trading wildly at 
+a price of more than $700 per ounce, gold futures had a larger daily trading limit than 
+they do at more stable levels of $300 to $400 an ounce (the current limit is a $15 
+move per day). If a commodity reaches its limit repeatedly for two or three days in a 
+row, the exchange will usually increase the limit to allow for more price movement. 
+The Chicago Board of Trade automatically increases limits by 50% if a futures con­
+tract trades at the limit three days in a row. 
+Whenever limits exist there is always the possibility that they can totally destroy 
+the liquidity of a market. The actual commodity underlying the futures contract is 
+called the "spot" and trades at the "spot price." The spot trades without a limit, of 
+course. Thus, it is possible that the spot commodity can increase in price tremen­
+dously while the futures contract can only advance the daily limit each day. This sce­
+nario means that the futures could trade "up or down the limit" for a number of days 
+in a row. As a consequence, no one would want to sell the futures if they were trad­
+ing up the limit, since the spot was much higher. In those cases there is no trading in 
+the futures - they are merely quoted as bid up the limit and no trades take place. This 
+is disastrous for short sellers. They may be wiped out without ever naving the chance 
+to close out their positions. This sometimes happens to orange juice futures when an 
+unexpected severe freeze hits Florida. Options can help alleviate the illiquidity 
+caused by limit moves. That topic is covered later in this chapter. 
+DELIVERY 
+Futures on physical commodities can be assigned, much like stock options can be 
+assigned. When a futures contract is assigned, the buyer of the contract is called upon 
+to receive the full contract. Delivery is at the seller's option, meaning that the owner 
+of the contract is informed that he must take delivery. Thus, if a corn contract is 
+assigned, one is forced to receive 5,000 bushels of corn. The old adage about this 
+being dumped in your yard is untrue. One merely receives a warehouse receipt and