← All of Final Cut Pro

• ⌥Option C
  Add a caption at the playheadalso⌃Control ⌥Option C With the caption editor open.
• ⌃Control ⇧Shift C
  Open the selected caption in the caption editor
• ⇧Shift ⌘Command C
  Transcribe the spoken words into closed captions
• ⇧Shift ⌘Command S
  Transcribe the spoken words into subtitles