Rule Summary: Requires dealers to provide customers with written confirmations of transactions, containing specified information, including mark-ups and mark-downs, and prescribes certain uniform practice procedures for dealers that transact municipal securities business with customers.

Rule Summary: Establishes requirements relating to CUSIP numbers for dealers and, in competitive offerings, municipal advisors; requires underwriter participation in the New Issue Information Dissemination Service (NIIDS); and requires submission of certain information and documents related to auction rate securities and variable rate demand obligations to the SHORT system.