[Bill Keller, the executive editor of The Times, said Ms. Miller had been cautioned by her lawyers not to discuss the substance of her grand jury testimony until Mr. Fitzgerald finished questioning her.] We have launched a vigorous reporting effort that I hope will answer outstanding questions about Judy's part in this drama, ... This development may slow things down a little, but we owe our readers as full a story as we can tell, as soon as we can tell it. Bill Keller