y_operator">unary_operator</a> * <a href="#type-expression">expression</a></span></code></li><li id="type-simple_expression.Variable" class="def variant constructor anchored"><a href="#type-simple_expression.Variable" class="anchor"></a><code><span>| </span><span><span class="constructor">Variable</span> <span class="keyword">of</span> </span><span>{</span></code><ol><li id="type-simple_expression.vname" class="def record field anchored"><a href="#type-simple_expression.vname" class="anchor"></a><code><span