The following recording modes are available:
Record Overwrite
All audio after the current playback / recording position is deleted then recording begins at the end of the dictation.
Record Insert
New audio is inserted at the current playback / recording position. All existing audio is preserved before or after the new audio.
Record at End
Recording begins at the end of the dictation. All existing audio is preserved before the new audio.
The default recording mode is "Record at End".