On 30 Oct 2023, at 08:18, Evan Driscoll <evaned@gmail.com> wrote:
The docs seem to talk about Keep_alive_together_engraver saying it "is particularly useful for ‘divisi’ staves, where some
individual parts (see Writing parts) occasionally need
to be expanded to more than one staff" (noting that maybe it's talking about hiding staves more generally), but I honestly can't see how that engraver is relevant in that context.
My take on it would be that it tries to say: You can use it in a larger piece to keep all non-divisi-staffs 'alive together', allowing the non-divisi staves to have a full-rests line without being removed. (derived from the 'where *some* individual parts')