Strategy. The fund invests mainly in bonds (including general obligation bonds, revenue obligation bonds, and tender option bonds) that pay interest that is exempt from federal income tax and California personal income tax (but that may be subject to federal and/or California alternative minimum tax (AMT)), are investment-grade in quality and have intermediate- to long-term maturities (i.e., three years or longer). Under normal circumstances, the fund invests so that at least 90% of the funds income distributions are exempt from federal income tax and California personal income tax, except during times of adverse market conditions, when more than 10% of the funds income distributions could be subject to these taxes. Such tax-exempt investments in which the fund invests are issued by … Show more… The fund invests mainly in bonds (including general obligation bonds, revenue obligation bonds, and tender option bonds) that pay interest that is exempt from federal income tax and California personal income tax (but that may be subject to federal and/or California alternative minimum tax (AMT)), are investment-grade in quality and have intermediate- to long-term maturities (i.e., three years or longer). Under normal circumstances, the fund invests so that at least 90% of the funds income distributions are exempt from federal income tax and California personal income tax, except during times of adverse market conditions, when more than 10% of the funds income distributions could be subject to these taxes. Such tax-exempt investments in which the fund invests are issued by or for states, territories or possessions of the United States or by their political subdivisions, agencies, authorities or other government entities, and the income from these investments is exempt from both federal and California personal income tax. This investment policy cannot be changed without the approval of the funds shareholders. Interest income from private activity bonds may be subject to federal AMT for individuals. As a policy that cannot be changed without the approval of fund shareholders, the fund cannot include these investments for the purpose of complying with the 90% investment policy described above. The fund may invest up to 25% of its total assets in below-investment-grade investments, which are sometimes referred to as junk bonds. However, the fund will not invest in investments that are rated lower than BB or its equivalent by each organization rating the investment, or are unrated securities that the Investment Manager believes are of comparable quality. The fund will not necessarily sell an investment if its rating is reduced after purchase. The Investment Manager may consider, among other factors, credit, interest rate and prepayment risks, as well as general market conditions, when deciding whether to buy or sell investments. Show less