Setup the margin between the subtitles and the bottom of the video.
Setup subtitle base style.
Setup the interactive behavior when the mouse is over the subtitle text.
Setup the count of subtitles, up to 8.
This option is used to reduce the "Subtitle Language" and the "Machine Translation" menu items.
Note: It should has at least one literal language code matches, otherwise no menu items will be hidden.
Related document: Language Code.
Setup translation language list.
The "popular languages" is based on the statistics of the translate interface on Dualsub server, it also includes your browser language.
Setup translation engine.
Setup translation mode.
Related document: Improve YouTube Translation.
Setup the pinyin scheme.
Setup the furigana character for Japanese.
This option only decides add furigana data or not, how to display the furigana data is controlled by the style system.