<https://fxnewsgroup.com/forex-news/exchanges/london-metal-exchange-to-prohibit-use-of-discretionary-order-type-for-all-tradeable-contracts/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://fxnewsgroup.com/tag/mifid-ii/page/2/>