A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed issues related to the regulation of electronic trading systems, focusing on: (1) how technology is being used in the exchange-traded futures market, and what concerns this use raises under the Commodity Exchange Act (CEA); (2) how technology is being used in the over-the-counter (OTC) derivatives market, and what concerns this use raises under the CEA; and (3) what alternatives have been suggested for addressing the concerns raised under the CEA by the use of technology in the exchange-traded futures and OTC derivatives markets."