Track between half-width position at 2nd corner and half-width position at 3rd corner, set "u" (#003399)
<ul><li>original file: <a href="//commons.wikimedia.org/wiki/User:Tuvalkin" title="User:Tuvalkin">Tuvalkin</a></li>
<li>modified file: <a href="//commons.wikimedia.org/wiki/User:YLSS" title="User:YLSS">YLSS</a></li></ul>
2013-05-15 20:04
This file was derived from: <a href="//commons.wikimedia.org/wiki/File:BSicon_dSTRl%2B4.svg" title="File:BSicon dSTRl+4.svg">BSicon dSTRl+4.svg</a><br>