The Microsoft side, they say, has made a puzzling number of basic mistakes, noting that witnesses should not be surprised by documents or prior testimony.

If he so answers, it is enough for his prior testimony to be considered essentially truthful.

He also apparently managed to recall items that he had not remembered in his prior testimony.

In the deposition you will observe her as having to affirm her prior testimony.

She had to affirm her prior testimony because that was what was in the grand jury.

He invoked his Fifth Amendment right against self-incrimination to avoid prior testimony.

"Much of what you heard from tobacco company experts is at odds with their prior testimony and contemporary documents," Ms. Eubanks said.

He also referred to his own prior testimony and to that of others.

I would be pleased to respond to requests for clarification of my prior testimony or to respond to additional questions by the committee.

He began to recant his prior testimony.