If you are using subtitles to follow the dialogue closely, be aware of version differences:
: Most official releases for these regions explicitly state they have no subtitles . Users in these regions have reported difficulty finding versions with text support.
: Most current Blu-ray sets for the complete series do not include subtitles . Key Content Details
: Original releases and some collections are often listed as "Closed-captioned" . While these have captions embedded in the video signal (accessible through TV settings on older televisions), they often lack modern, selectable DVD subtitles.