This document provides an overview of BOLT, the Bombay Stock Exchange's online trading system. It describes how BOLT automated stock trading in India by introducing a screen-based system that allows brokers to place orders electronically via computers and VSAT networks, replacing the previous open-outcry method. The key aspects covered include how brokers log in and enter buy/sell orders through their terminals, how the orders are transmitted to the main exchange computer, and how trades are matched and executed based on price and time priority. Important terms like circuit breakers, order books, and trade books are also defined.