&gt; If anyone finds the document that highlights this, I&#x27;d be grateful for a link.<p>probably this one : <a href="http:&#x2F;&#x2F;www.vpri.org&#x2F;pdf&#x2F;m2010002_lobjects.pdf" rel="nofollow">http:&#x2F;&#x2F;www.vpri.org&#x2F;pdf&#x2F;m2010002_lobjects.pdf</a> ?