A more thorough explanation:

The implied-license doctrine is a legal principle that states a person's actions or conduct can be interpreted as granting permission to do something. It can also mean that a statute can provide the necessary authority for a specific action.

A person leaves their car parked in a public parking lot with the keys in the ignition. Another person sees the car and assumes that the owner has given them permission to take the car for a joyride. In this case, the owner's conduct of leaving the keys in the car can be interpreted as granting permission, even though they did not explicitly give permission.

A city ordinance allows for the use of public parks for certain activities, such as picnics and sports. While the ordinance does not explicitly state that people can use the park for birthday parties, the implied-license doctrine can be used to interpret that the ordinance provides the necessary authority for such an activity.

These examples illustrate how the implied-license doctrine can be used to interpret actions or laws in a way that grants permission or authority, even if it is not explicitly stated.