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 Norway and Finnmark, the flag is flown between 10.00 and 15.00 from November to February. These rules do not apply for private use of the flag, but they are generally observed by all citizens. There also exist written rules for the proper folding of the flag, for not letting it touch the ground, and in addition the unwritten rule that it should not be worn on the body below the waist. The proportions of the national flag are 22:16 (width to length), its colour elements having widths of 6:1:2:1:12 and lengths of 6:1:2:1:6. The proportions of the state flag are 27:16,