Ani v konfiguračním xml souboru nic není.

<section name="Teletext">
    <entry name="Font">Liberation Mono</entry>
    <entry name="Bold">0</entry>
    <entry name="BackTransparency">255</entry>
    <entry name="Outline">0</entry>
    <entry name="CharSetPrefs">65982</entry>
  </section>

Jdu zkusit entry name="Letter-spacing