or the kana reading for a kanji; the draggable word to be matched to the word/kanji.<br>
          <strong>sentence</strong>: an example sentence to help you further memorize the word in multiple choice exercises. You can show the sentence fields by ticking the "Show sentence fields" option.<br>
          <strong>+</strong>: add a word<br>
          <strong>-</strong>: remove a word<br><br>
          
          <strong>Custom Vocabulary Code</strong>: If you're familiar with <a href="https://developer.mozil