foo</span>)   <span class="mdzsyn-comment"># true -- keywords compare lexicographically by keyword name</span>
(<span class="mdzsyn-coresym">=</span> <span class="mdzsyn-constant">nil</span> <span class="mdzsyn-constant">nil</span>)      <span class="mdzsyn-comment"># true -- nil always equal to itself and only itself</span></code></pre><p>More generally, each of these operators can take any number of arguments
(from 0) and will return true if the arguments do not violate the ordering
implied by the operato