"k"-track with 1st and 2nd corners, set "u"
<ul><li><a href="//commons.wikimedia.org/wiki/File:BSicon_uhkSTRl%2Bl.svg" class="mw-redirect" title="File:BSicon uhkSTRl+l.svg">BSicon uhSTR+hk12.svg</a>: <a href="//commons.wikimedia.org/wiki/User:YLSS" title="User:YLSS">YLSS</a></li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Tuvalkin" title="User:Tuvalkin">Tuvalkin</a></li></ul>
2014-01-21 14:32
This file was derived from: <a href="//commons.wikimedia.org/wiki/File:BSicon_uhSTR%2Bhk12.svg" title="File:BSicon uhSTR+hk12.svg">BSicon uhSTR+hk12.svg</a>: <a href="//commons.wikimedia.org/wiki/File:BSicon_uhSTR%2Bhk12.svg" class="image"><img alt="BSicon uhSTR+hk12.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/e/e5/BSicon_uhSTR%2Bhk12.svg/50px-BSicon_uhSTR%2Bhk12.svg.png" decoding="async" width="50" height="50" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/e/e5/BSicon_uhSTR%2Bhk12.svg/75px-BSicon_uhSTR%2Bhk12.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/e/e5/BSicon_uhSTR%2Bhk12.svg/100px-BSicon_uhSTR%2Bhk12.svg.png 2x" data-file-width="500" data-file-height="500"></a><br>