You can write new notes and link them to any previously-recorded audio by writing on Livescribe Dot Paper as you play back the audio recording.
Annotation is very useful when you need to clarify or expand on your notes at a later time. For example, you may need to go back to your notes to correct or clarify a point made in a meeting or lecture. The annotations you write are linked to your original recorded audio, so you can later tap on the annotations and hear the audio that was playing when you wrote them.