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 the Philippines arenas, casinos, disco venues, night and day clubs, gambling joints and "places of vice or where frivolity prevails" is illegal. The flag may be flown at half-mast as a sign of mourning. Upon the official announcement of the death of the President or a former President, the flag should be flown at half-mast for ten days. The flag should be flown at half-mast for seven days following the death of the Vice President, the Chief Justice, the President of the Senate or the Speaker of the House of Representatives. The flag may also be required to fly at half-mast upon