This fund primarily aims to deliver substantial current income that is exempt from ordinary federal income taxation. Generating capital appreciation stands as a secondary objective. Typically, under normal market conditions, the fund dedicates a minimum of 80% of its combined net assets and any borrowed funds towards municipal bonds, the interest from which is free from regular federal personal income tax. A significant portion of its portfolio is allocated to lower-quality, long-term municipal debt instruments. Furthermore, it retains the flexibility to utilize leverage, potentially through holdings in inverse floaters, to enhance its investment exposure.