These symbols are used in Creative Commons licenses. It’s very helpful to know what they mean. The symbol on the left stands for attribution (BY), which lets other people use and distribute your work for as long as it is credited. The second symbol means noncommercial (NC), which lets other people use your work for noncommercial purposes. The third symbol is no derivative works (ND), meaning others cannot make derivative works and must keep it as is. The last symbol is share alike (SA), which sets the condition that the derivative work can be used only with the same license as the original work. One or a combination of these conditions can be in the same license. For example, you can indicate that your home video is BY-SA or BY-NC-ND. You can also choose which jurisdiction’s Copyright Law will apply to your work.