Rule Summary: Prohibits discretionary account transactions and effecting purchase and sale transactions of municipal securities by dealers, where the dealer has a control relationship with respect to the security, absent disclosure to the customer of such relationship.

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.