WHAT IS A LICENSE?: I searched over the internet to know what is the official definition of a license and I found the answer in this
WIKIPEDIA PAGE , "A license is an official permission or permit to
DO,
USE, or
OWN something (as well as the document of that permission or permit.It may be granted by a party ("licensor") to another party ("licensee") as an element of an agreement between those parties. A shorthand definition of a license is "an authorization (by the licensor) to use the licensed material (by the licensee).".