RE-BROADCAST PRIME TIME PROGRAMMING RULE

I JUST LEARD THAT THERE IS A RULE WHEN A STATION LIKE WGNO-ABC26 PRE-EMPTS AMERICA'S FUNNIEST HOME VIDEO'S ON SUNDAY, OCTOBER 26, 2008 WGNO-ABC26 WOULD RE-BROADCAST AMERICA'S FUNNIEST HOME VIDEO'S ON EARLY MONDAY MORNING, OCTOBER 27, 2008 AT 1:05 AM CENTRAL TIME