The interior design of the aircraft is important in helping to set an appropriate
mood for passengers. The careful use of colour schemes will help to create a
calm, relaxing environment. Seat design is particularly important. Seats are in
effect high-technology items of equipment which are medically and functionally
researched. They incorporate communication and entertainment facilities and
safety items, as well as table arrangements for use during meal service. The
seats provided in the different class sections on each aircraft can vary
considerably.