Original file description is/was <a href="https://en.wikipedia.org/wiki/Image:Nfpa_r0.png" class="extiw" title="en:Image:Nfpa r0.png">here</a>.
derivative work: <a href="//commons.wikimedia.org/w/index.php?title=User:Chocimier&amp;action=edit&amp;redlink=1" class="new" title="User:Chocimier (page does not exist)">Chocimier</a>
This file was derived from: <a href="//commons.wikimedia.org/wiki/File:Nfpa_r0.png" title="File:Nfpa r0.png">Nfpa r0.png</a>: <a href="//commons.wikimedia.org/wiki/File:Nfpa_r0.png" class="image"><img alt="Nfpa r0.png" src="https://upload.wikimedia.org/wikipedia/commons/1/19/Nfpa_r0.png" decoding="async" width="50" height="150" data-file-width="25" data-file-height="75"></a><br>