Type of licences
Rightholders can give licences for use and distribution. It can be Creative Common licence or commercial licence.
Creative Common licence is free of charge.
Commercial licence can be exclusive or non-exclusive.
In both cases the licensor permits the licensee to use intellectual property in return for a compensation. In an exclusive licence, the parties agree that no other person can use intellectual property rights except the licensee. In a non-exclusive licence intellectual property can be used by multiple licensees.