Mask for overlaying of several BSicons.
<a href="//commons.wikimedia.org/wiki/User:Useddenim" title="User:Useddenim">Useddenim</a>
2022-12-14
<a href="//commons.wikimedia.org/wiki/File:BSicon_hSTR3%2B4.svg" title="File:BSicon hSTR3+4.svg">BSicon hSTR3+4.svg</a>