ass="ja">カスタム練習コード</span> (JSON)</h3>
        <p>The custom vocabulary code is used to save your created vocabulary list. You can save this code to a text file for later, so you don't have to recreate your custom vocab. When you're ready to study your vocab again, just load the file or drag and drop it into this textarea and click "study" to continue where you left off.</p>
        
        <div id="study-tool-code">
          <textarea id="study-tool-json" oninput="Genki.tools.updateUI();