نقل از ویکی پدیا:
The copyleft symbol is a backwards C in a circle (copyright symbol © mirrored). Because it is unavailable on Unicode, it can be approximated with character U+2184 ↄ latin small letter reversed c between parenthesis (ↄ) or, if supported by the application, by combining it with the character U+20DD combining enclosing circle ↄ It has no legal meaning.