Wow, that&#x27;s a very detailed look. Thanks! Feel free to email me; my address is in my profile.<p>The terminology is definitely a work in progress. It&#x27;s mostly for my attempts to teach programming using Mu. I noticed that mathematical words intimidated some students. I tried to write up my rationale here: <a href="http:&#x2F;&#x2F;akkartik.name&#x2F;post&#x2F;mu" rel="nofollow">http:&#x2F;&#x2F;akkartik.name&#x2F;post&#x2F;mu</a>. But I&#x27;ve certainly started mixing up the terms with my student, so it might not last.