"></rect>
         <text class="terminal" x="387" y="327">(</text>
         <a xlink:href="sql-grammar.html#a_expr" xlink:title="a_expr">
            <rect x="465" y="309" width="64" height="32"></rect>
            <rect x="463" y="307" width="64" height="32" class="nonterminal"></rect>
            <text class="nonterminal" x="473" y="327">a_expr</text>
         </a>
         <rect x="465" y="353" width="80" height="32" rx="10"></rect>
         <rect x="463" y="351" width="80" height="32" class="terminal" r