The investment seeks to provide a high level of after-tax income from a diversified portfolio of fixed-income investments. The fund normally invests in municipal bonds. It may invest up to 35% of assets in securities rated below investment-grade. The fund may invest any portion of assets in cash and cash equivalents. It may invest a significant portion of assets in municipal housing authority obligations. The fund invests in loan assignments and participations and commitments to purchase loan assignments. It is nondiversified.