The ball 's design has been updated Cause_to_make_progress over the years to reflect improvements in lighting Lighting technology ; the ball was initially constructed Building from wood and iron , and lit Lighting with 100 incandescent light bulbs .

Planned VHS release for the show , recorded in Sydney Australia was cancelled Change_event_time in favour of an updated version of the tour following its extension into Europe in late 1991 .

New requirements to install smoke detectors in lavatories , strip Emptying lights marking Recording paths to exit doors , and increased Cause_change_of_position_on_a_scale firefighting training Education_teaching and equipment Supply for crew became Becoming standard across the industry , while regulations regarding evacuation Escaping were also updated Cause_to_make_progress .