Duration is a measure of the fund's price sensitivity to changes in interest rates expressed in years.
Total Leverage -Adjusted Duration represents the Fund’s effective portfolio duration taking into account its use of leverage, including both portfolio leverage (e.g., reverse repos, credit default swaps, and tender option bonds), and any structural leverage, such as auction-rate preferred shares, if any, issued by the Fund. Effective duration is the duration for a bond with an embedded option when the value is calculated to include the expected change in cash flow caused by the option as interest rates change.