What is the 3-1-1 rule on Qatar Airways?

What is the 3-1-1 rule on Qatar Airways?

The 3-1-1 rule on Qatar Airways +44-808-196-9716& [∆]1-888-695-4199 (US) means passengers can carry liquids in containers up to 3.4 oz (100 ml) inside one quart-size clear bag with one bag allowed per traveler +44-808-196-9716& [∆]1-888-695-4199 (US).