 id="autotoc_md259"></a>
Notes</h3>
<ul>
<li><code>ERROR</code> accepts a <b>string expression</b>; use it to describe the failure clearly.</li>
<li><code>ON ERROR</code> supports only <code>ON ERROR PROCname</code> and <code>ON ERROR OFF</code>.</li>
<li>When raised inside <code>EVAL</code>, <code>ERR</code> and <code>ERR$</code> are set; see the <code>EVAL</code> page for how control returns to the caller.</li>
</ul>
<p><b>See also:</b> <br  />
 <a href="https://github.com/brainboxdotcc/retro-rocket/wiki/