ght: bold;">&#321;</span>) &#8594; <span
 style="font-family: arial;">model</span>(<span
 style="font-style: italic; font-weight: bold;">L</span>)<br>
      <span style="font-family: arial;">type</span>(<span
 style="font-style: italic; font-weight: bold;">f</span>)&nbsp; = <span
 style="font-family: arial;">expr</span>(<span
 style="font-style: italic; font-weight: bold;">f</span>) : <span
 style="font-family: arial;">expression</span>(<span
 style="font-style: italic; font-weight: bold;">L</span>) &#8594;