11.   The San Pedro de Atacama hotel uses such local techniques as aqueducts incorporated into the structure and bricks made of volcanic rock.

12.   Evergreen trees were festooned with cotton and the hotel used dry ice to produce fog.

13.   Hotels were also graded on whether franchise opportunities are offered to blacks and whether the hotels use black contractors.

14.   Some hotels already use indoor changeable signs somewhat like the liquid-crystal displays on electronic calculators.