In reply to Adrian Bedford.

@Adrian: Thank you very much for your support of Dorico for iPad! "Flow" is our term for any self-contained chunk of music, whether it's a movement of a larger work, a number in a musical, a song in a songbook, an exercise in a tuition book, or indeed any other piece of music that stands alone. We used the term "flow" rather than something more musically specific precisely because it can represent so many different kinds of musical ideas. If you'd like to read more, you can find some more information in the Operation Manual here.