 class="reference internal" href="#substring">SUBSTRING</a> &lt;string&gt; &lt;begin&gt; &lt;length&gt; &lt;out-var&gt;)
  string(<a class="reference internal" href="#strip">STRIP</a> &lt;string&gt; &lt;out-var&gt;)
  string(<a class="reference internal" href="#genex-strip">GENEX_STRIP</a> &lt;string&gt; &lt;out-var&gt;)
  string(<a class="reference internal" href="#repeat">REPEAT</a> &lt;string&gt; &lt;count&gt; &lt;out-var&gt;)

<a class="reference internal" href="#comparison">Comparison</a>
  string(<a c