28 From <a href="http://www.nasdaqtrader.com/content/technicalsupport/specifications/dataproducts/soupbintcp.pdf">"SoupBinTCP, Version 3.00"</a> and <a href="https://nasdaqtrader.com/content/technicalsupport/specifications/TradingProducts/OUCH4.2.pdf">O*U*C*H, Version 4.2, February 29, 2016</a>.