The automatic slide division feature has been moved to the Application Unit of text animation. Please refer to the text animation documentation for detailed information.
In Videostew, a slide signifies a single scene. It would be great if you could divide your text into units thinking of it as showing along with a background video.
However, if a slide has too much text, you can use the [automatic slide division] feature to make it output in one or two lines for easier viewing. Because the sync of automatically generated text with the speech is taken care of, you don't have to worry too much; the subtitles will match the audio perfectly.
But if the timing of a particular line doesn't match, you can manually adjust the sync of the subtitles.