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 Spain squares, or during official ceremonies. While the flag should be flown from sunrise to sunset, government offices in Spain and abroad must fly the flag on a 24-hour basis (during the night, it must be properly lit). The flags must conform to the legal standards, and cannot be soiled or damaged in any way. For mourning activities, the flag can be flown in either of the following ways. The first method, commonly known as half-masting, is performed when the flag is hoisted to the top of the flagpole, then lowered to the pole's one-third position. The other method is to