Development of a computer network, which-- a) provides information on the subjects of Stock Exchanges, Electronic Trading Venues, and other Securities Markets, Institutions, and Organizations, b) provides stock/securities market information, c) allows brokers and dealers to get access via a global computer network to securities markets in different countries, submit and execute orders on those markets, and d) allows participating Securities Exchanges and Settlement Organizations to exchange corrections, cancellations, trade execution reports, settlement instructions, and other securities-related messages via computer network on a real-time basis