The new contracts replace and expand the old one.

The contract would replace the computing systems in the nation's long-distance high-altitude air traffic control centers.

The contract replaces the traditional salary schedule with four professional categories that teachers could move through and which would be tied to the compensation.

The contract, which takes effect today, runs through Dec. 31, 2003, and replaces a $450,000-a-year deal that would have run through 2002.

The contract replaces the final 5 years of a 10-year contract Welsh signed in 1985.

The contract replaces the last year of Martin's old deal and binds him to the Saints through 2000.

The new contract replaces his current deal, which was scheduled to expire at the end of this year.

The new contract replaced the one-year, $5.39 million deal the Dolphins tendered Taylor in February, 2001, when he was designated their franchise player.

In broadcasting, short-term contracts often replace staff jobs.

Two others, including Dr. Wilson, the city's first black Superintendent, have been removed from office before their contracts expired and replaced with interim administrators.