The investment seeks to provide current income that is generally exempt from federal income taxes and long-term total return. The fund seeks to achieve its investment objective by investing in investment grade and non-investment grade municipal securities that the sub-adviser, Wellington Management, considers to be attractive from a yield perspective while considering total return. At least 80% of the fund’s net assets must be invested in municipal securities, and up to 35% of the fund’s net assets may be invested in non-investment grade municipal securities.