If you want a crash course on capabilities, I&#x27;d suggest Ben Laurie&#x27;s paper &quot;Access Control (v0.1)&quot;:<p><a href="http:&#x2F;&#x2F;www.links.org&#x2F;files&#x2F;capabilities.pdf" rel="nofollow">http:&#x2F;&#x2F;www.links.org&#x2F;files&#x2F;capabilities.pdf</a>