Sample TinyMCE editor custom styles localization in Episerver.

TinyMceTexts.xml

<?xml version="1.0" encoding="utf-8" ?>
<languages>
  <language name="English" id="en">
    <tinymce>
      <editorstyles>
        <title-paragraph-styles>Paragraph styles</title-paragraph-styles>
        <title-introduction>Introduction</title-introduction>
        <title-ingress>Ingress</title-ingress>
      </editorstyles>
    </tinymce>
  </language>
</languages>