a. Click on buildings to get information about buildings. b. Press space to turn on/off traffic lights. c. Press 1 to turn on/off lights of "skyscraper" building. d. Press 2 to turn on/off lights of "city hall" building. e. Press 3 to turn on/off lights of "factory1" building. f. Press 4 to turn on/off lights of "factory2" building. g. Press 5 to turn on/off lights of "house1". h. Press 6 to turn on/off lights of "house2". i. Press s to turn on/off "Security System" to turn on/off lights of all buildings.
