Also. . .

* American Airlines said beginning June 1, passengers will be limited to two carry-on items that must fit within baggage sizers at airport gates, joining other carriers in tightening baggage rules.

* Equity Office Properties Trust, headed by billionaire financier Sam Zell, said it bought 13 office buildings in Denver and Albuquerque for about $394 million.

* Ugly Duckling Corp. said it will spin off part of its auto-lending business into a new company, Cygnet Financial Corp., which will extend lines of credit to used-car dealers. The company also said first-quarter profit more than quadrupled to $3.75 million, or 20 cents a share, from a year ago as revenue more than tripled to $85.4 million.