<https://forum.nanocad.ru/index.php?/topic/11088-podklyuchenie-oborudovani/#comment-68831>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://forum.nanocad.ru/index.php?/topic/11088-podklyuchenie-oborudovani/&tab=comments>