Hi George,
Do we have a policy on the use of naturals with Sagittals, and if so, what is it and why? Is it different for pure vs mixed? Is it affected by whether there are Sagittals in the key signature? Are Sagittals treated differently from conventional sharps and flats? What about pure Sagittal sharps and flats? Are Sagittals always non-sticky? We have nothing about this in the primary document on Sagittal. We show lots of naturals in that document, but is that only when there is no notehead, so you need _something_ to indicate the relative position of the zero alteration point in the sequence?
Here's are some useful discussions of the existing conventions regarding naturals, in conventional notation:
https://en.wikipedia.org/wiki/Accidental_(music)
https://www.quora.com/Why-do-we-use-natural-sign-While-we-can-not-use-it-and-write-the-notes-without-changing-signs-like-sharp-or-flat
Does anyone have any ideas on what the convention(s) should be for Sagittal?