P245 CEEFAX 245 Thu 28 Oct 21:14/14    WALL STREET    (Close):Blue-chip stocks leaped into record territory propelled by upbeat earnings news, and growth in the US economy. $hj Dow Jones industrial average closed up 23.20 points at a new high of 3,687.86, based on early and unofficial data. Advbnces led declines by 11-8 on the NYSE on a volume of 299 million shares.  World indices 243 Dow Jones 242 Euro/East Dow Jones Exchanges World Ind