span class="o">.</span><span class="n">grapa</span><span class="p">()</span>

<span class="c1"># Initialize file system (works in both execution modes)</span>
<span class="n">xy</span><span class="o">.</span><span class="n">eval</span><span class="p">(</span><span class="s2">&quot;$global.fs = $file();&quot;</span><span class="p">)</span>

<span class="c1"># Use file system - variables persist automatically in direct execution</span>
<span class="n">xy</span><span class="o">.</span><span class="n">eval</spa