This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
UAC. Miscellaneous Technical FF block Its Transparent pic file so the symbol can blend in with web page's background color Next symbol inside first bracket is displayed by using the hex html code Still many web browsers are unable to display all or some of the unicode characters This pic can help the users of those web browsers