Terms of use have traditionally been negotiated on an individual basis between copyright holder and potential licensee. Therefore, a general CC license outlining which rights the copyright holder is willing to waive enables the general public to use such works more freely. Six general types of CC licenses are available (although some of them are not properly free per the above definitions and per Creative Commons' own advice). These are based upon copyright-holder stipulations such as whether he or she is willing to allow modifications to the work, whether he or she permits the creation of derivative works and whether he or she is willing to permit commercial use of the work. approximately 130 million individuals had received such licenses.