A more thorough explanation:

Prescribable

Prescribable means that something can be acquired or extinguished by prescription.

• After living on the land for over 20 years, the farmer had prescribable rights to use the water from the nearby stream.
• By paying rent for the past 10 years, the tenant had prescribable rights to the property.

These examples show that when someone has been using or occupying something for a certain amount of time, they may gain prescribable rights to it. This means that they have the right to continue using or occupying it, and others cannot take it away from them.