This fund primarily allocates its capital to municipal debt instruments, with a commitment that at least 80% of its net assets (including any capital obtained through borrowing for investment purposes) will be directed to these securities. These selected municipal obligations are designed to be free from standard federal income tax and the particular state taxes outlined in the fund's mandate. Additionally, no less than 75% of the fund's net assets are customarily invested in municipal bonds that possess an investment-grade credit rating upon purchase, or are judged by the investment adviser to be of comparable quality if unrated.