When granting a licence, the copyright remains entirely in your possession. You "lease" your work, for an (un)limited period of time. A licence holder may only do what is agreed upon (the so-called "right of use"). All other forms of multiplication or publication must be separately agreed upon by you. In a licence you may grant all possible forms of use exclusively to another party. Transfer can also be limited to a single or a few form(s) of use. Both forms of utilisation therefore do not necessarily have to differ greatly. The choice for one or the other often lies in the fact that as the "owner" you have more legal influence than as "renter". According to the law, a transfer must be recorded in writing. Licences are sometimes also valid if they have been verbally agreed upon, or if they are implied in certain actions. For instance, if you send a letter to the editor of a newspaper, you are implicitly giving permission for it to be published. Although it is therefore not always required to record a licence in writing, it is often advisable to do so in order to eliminate misunderstandings.