The boundary between a system and its surroundings
<ul><li><a href="//commons.wikimedia.org/wiki/File:System_boundary.svg" title="File:System boundary.svg">System_boundary.svg</a>: <a href="https://en.wikipedia.org/wiki/User:Wavesmikey" class="extiw" title="en:User:Wavesmikey">en:User:Wavesmikey</a>, traced by <a href="//commons.wikimedia.org/wiki/User:Stannered" title="User:Stannered">User:Stannered</a></li>
<li>derivative work: <a href="//commons.wikimedia.org/w/index.php?title=User:Aleksd&amp;action=edit&amp;redlink=1" class="new" title="User:Aleksd (page does not exist)">Aleksd</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Aleksd" title="User talk:Aleksd"><span class="signature-talk">talk</span></a>)</li></ul>
2011-03-05 16:14
<ul><li><a href="//commons.wikimedia.org/wiki/File:System_boundary.svg" title="File:System boundary.svg">System_boundary.svg</a></li></ul>