Quarantine with a disinfecting stove, have a right to navigate the Canal, in quarantine, subject only to the landing of those who were suffering from plague. Plain yellow, green, and even black flags have been used to symbolize disease in both ships and ports, with the color yellow having a longer historical precedent, as a color of marking for houses of infection, previous to its use as a maritime marking color for disease. The present flag used for the purpose is the "Lima" (L) flag, which is a mixture of yellow and black flags previously used. It is sometimes called the
Flag of New Zealand use of the flag. No permission is needed to fly the flag, and it may be flown on every day of the year—government and public buildings with flagpoles are especially encouraged to fly the flag during working hours. However, it should never be flown in a dilapidated condition. Unlike some other countries there is no single official Flag Day in New Zealand, and no pledge of allegiance to the flag. Flag flying may be encouraged on certain commemorative days, at the discretion of the Minister for Arts, Culture and Heritage. The flag can only be used as a vehicle flag