This excerpt taken from the DIS 8-K filed Mar 10, 2005.
Calculation of Rate by Reference to Base Rate and, as Applicable, Spread, Spread Multiplier and Index Maturity. The interest rate on each Floating Rate Note will be calculated by reference to the specified Base Rate or the lowest of two or more specified Base Rates, in either case plus or minus the Spread, if any, or multiplied by the Spread Multiplier, if any. The Spread is the number of basis points to be added to or subtracted from the related Base Rate or Rates applicable to such Floating Rate Note. The Spread Multiplier is the percentage of the related Base Rate or Rates to be multiplied to determine the applicable interest rate on such Floating Rate Note. The Index Maturity is the period to maturity of the instrument or obligation with respect to which the related Base Rate or Rates are calculated. Each Floating Rate Note and the applicable Pricing Supplement will specify the Index Maturity and the Spread or Spread Multiplier, if any, applicable thereto.