However, the artistic licence is not related to the aforementioned licence. It is an understatement, freedom of expression, the ability to make the subject more attractive or more attractive, by fictionalizing a part of the subject. But it is rarely so simple, with the activities of the licensee, a deal that must be of great interest to any savvy licensee, because a licensee of poor or poor performance can lead to a product or service that could have developed a good cash flow being useless, while other competing products dominate the field. In addition, most takers require advice and support from the licensee, so it inevitably involves more than «cashing cheques.» While many inventors dream of conceding their product to a multinational that simply pays a lot of money over time, the average license includes two small businesses that have to work together to succeed in the process. A license (American English) or a license (British English) is an official authorization or authorization to do, use or possess something (as well as the document of that authorization or authorization).  Those who enter into a licensing agreement should consult a lawyer, as there are complexities that are difficult to grasp for those who do not have a deep understanding of intellectual property law. A license is usually established by an explicit or tacit agreement. The licensee must approve the license, which can be shown in writing, or the licensees who accept their exercise. In addition, unlike many other contractual agreements, a license does not require consideration, a license can be established with or without it. In addition, the question of whether an agreement is considered a «licence» and not a tenancy clause depends on three essential characteristics of a licence: (1) a clause authorizing the licensee to revoke «as he sees fit»; (2) the maintenance of absolute control of the premises by the licensee; and (3) the provision to the licensee of all essential services necessary for the authorised use of the premises by the taker.  This article describes the essential requirements for a license agreement.