If you want to quickly set the start or end of a subtitle to the actual timeline cursor position, you can use this buttons:
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- The first button set the next start of subtitle to the actual timeline cursor position.
- The second button set the last start of subtitle to the actual timeline cursor position.
- The third button set the next end of subtitle to the actual timeline cursor position.
- The fourth button set the last end of subtitle to the actual timeline cursor position.