Quarantine "yellow jack" but this was also a name for yellow fever, which probably derives its common name from the flag, not the color of the victims (cholera ships also used a yellow flag). The plain yellow flag ("Quebec" or Q in international maritime signal flags) probably derives its letter symbol for its initial use in "quarantine", but this flag in modern times indicates the opposite—a ship that declares itself free of quarantinable disease, and requests boarding and routine port inspection. Australia has perhaps the world's strictest quarantine standards. Quarantine in northern Australia is important because of its proximity to South-east
Flag of Texas the POW/MIA flag is being flown with the U.S. flag; in which event the Texas flag shall only fly at the North Door. State law also requires that the state flag be flown at or near any International Port of Entry. When displayed vertically, the blue stripe should be at top and, from the perspective of an observer, the white stripe should be to the left of the red stripe. During revolutionary eras of Texas history, during the Spanish Texas period, Mexican Texas period, and the times of the Texas Revolution, a great number and variety of flags appeared. The