A *(VM)/compiler for the 'diamond-like' core of the _(Scheme) _(programming language):

<ul>
  <li>literal
  <li>variable
  <li>call
  <li>LAMBDA
  <li>IF
  <li>SET!
</ul>

<ul class="links">
  <li>_("Lunacy"|http://www.nightmare.com/~rushing/lunacy/index.html).</li>
</ul>