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 the Australian Capital Territory field in the fly is the modified coat of arms of the Australian Capital Territory. The flag was designed by Ivo Ostyn. Even though the Australian Capital Territory has existed since 1909 and was given self-government in 1989, it had never had a flag of its own. Consequently, the government decided that the Territory should adopt a flag. In 1988 and 1992 competitions for a proposed new flag were held, in which artists and residents of the ACT could put forth their designs for the new flag. Subsequently the current flag won the competition. The ACT Legislative Assembly then officially