Common use of Calls on Securities Indices and Futures Contracts Clause in Contracts

Calls on Securities Indices and Futures Contracts. The Fund may sell or purchase call options ("calls") on municipal bonds and indices based upon the prices of future contracts and debt securities that are traded on U.S. and foreign securities exchanges and in the over-the-counter markets. A call gives the purchaser of the option the right to buy, and obligates the seller to sell, the underlying security, futures contract or index at the exercise price at any time or at a specified time during the option period. All such calls sold by the Fund must be "covered" as long as the call is outstanding (i.e., the Fund must own the securities or futures contract subject to the call or other securities acceptable for applicable escrow requirements). A call sold by the Fund exposes the Fund during the term of the option to possible loss of opportunity to realize appreciation in the market price of the underlying security, index or futures contract and may require the Fund to hold a security of futures contract which it might otherwise have sold. The purchase of a call gives the Fund the right to buy a security, futures contract or index at a fixed price. Calls on futures on municipal bonds must also be covered by deliverable securities or the futures contract or by liquid high grade debt securities segregated to satisfy the Fund's obligations pursuant to such instruments.

Calls on Securities Indices and Futures Contracts. The Fund may sell or purchase call options ("“calls"”) on municipal bonds and indices based upon the prices of future contracts and debt securities that are traded on U.S. and foreign securities exchanges and in the over-the-counter markets. A call gives the purchaser of the option the right to buy, and obligates the seller to sell, the underlying security, futures contract or index at the exercise price at any time or at a specified time during the option period. All such calls sold by the Fund must be "“covered" ” as long as the call is outstanding (i.e., the Fund must own the securities or futures contract subject to the call or other securities acceptable for applicable escrow requirements). A call sold by the Fund exposes the Fund during the term of the option to possible loss of opportunity to realize appreciation in the market price of the underlying security, index or futures contract and may require the Fund to hold a security of futures contract which it might otherwise have sold. The purchase of a call gives the Fund the right to buy a security, futures contract or index at a fixed price. Calls on futures on municipal bonds must also be covered by deliverable securities or the futures contract or by liquid high grade debt securities segregated to satisfy the Fund's ’s obligations pursuant to such instruments.