Industry description
The investment seeks current income exempt from regular federal income tax.
The fund, under normal circumstances, invests at least 80% of its assets (net assets plus borrowings for investment purposes) in municipal bonds that are rated investment grade. On average, it will invest in municipal bonds that have a maturity range of 10 to 30 years. The fund may not invest more than 20% of its net assets in tax-exempt securities subject to the federal alternative minimum tax.