Free content
Free content, or free
information, is any kind of functional work, artwork, or other creative
Free content encompasses all works in the public domain and also those copyrighted works whose licenses honor and uphold the freedoms mentioned above. Because the law by default grants copyright holders monopolistic control over their creations, copyrighted content must be explicitly declared free, usually by the referencing or inclusion of licensing statements from within the work.
Though a work which is in the public domain because its copyright has expired is considered free, it can easily become non-free again with all its derivatives becoming non-free or illegal, if the copyright law changes.
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