What is multiple or dual citizenship?

• When Australian citizens hold the citizenship of another country or countries
  Explanation:

  "Multiple or dual citizenship occurs when Australian citizens hold the citizenship of another country or countries. This status allows individuals to enjoy the rights and privileges of both nations, such as holding multiple passports, while also being subject to the laws and obligations of each country."
• When Australian citizens hold citizenship of only one more country
• When Australian citizens only hold the Australian citizenship
• Dual citizenship does not exist