Simplify the following text for a Grade 13 native English-speaking person.
Original: ECW ( which at one time stood for Extreme Championship Wrestling ) was a professional wrestling brand of World Wrestling Entertainment ( WWE ) , based on the independent Extreme Championship Wrestling promotion that lasted from 1992 to 2001 .
Simplified: ECW is a professional wrestling television program for World Wrestling Entertainment ( WWE ) , based on the independent Extreme Championship Wrestling ( ECW ) promotion that lasted from 1992 to 2001 .