Re: Getting Off The Ground

In the original "Getting Off The Ground" message Joe wrote the following under "short term projects":
  Document music notation use cases. We need to begin to develop a separate document that covers and prioritizes the use cases that the CG’s work will support, to aid in evaluating the many alternative proposals and solutions that will come up.
What exactly is meant by that? Is this concerned with the technical aspects ("In which ways might applications implement music notation as a concept and how should this be facilitated?") or is it concerned with notational constellations themselves ("How should a specific semantic constellation be 'understood' within the standard, which parameters and relations are essential to a given constellation")? 

What would be a good way to have the community help with this documentation.

Alex