<span class="hljs-keyword">prefix</span> <span class="hljs-keyword">operator</span> <span class="hljs-title">+++</span>
<span class="hljs-keyword">postfix</span> <span class="hljs-keyword">operator</span> <span class="hljs-title">+++</span>
<span class="hljs-keyword">infix</span> <span class="hljs-keyword">operator</span> <span class="hljs-title">+-</span>: <span class="hljs-type">AdditionPrecedence</span>
