Type Alias VTTLineAlignSetting

VTTLineAlignSetting: "start" | "center" | "end"

A WebVTT-defined line alignment, represented by a value from the following list:
- 'start': The cue box's start is aligned at a specified line.
- 'center': The cue box's center is aligned at a specified line.
- 'end': The cue box's end is aligned at a specified line.