There is some reference in the code to the possibility of adding support for another breah symbol provided by the Bravura font, but from what I can tell, it isn't that one. I don't see a symbol like that in Bravura, which si the font we rely on for uncommon symbols like that. You might want to discuss this with Steinberg, the providers of this font. If the symbol is provided, it's not hard to add support for it.
Comments
There is some reference in the code to the possibility of adding support for another breah symbol provided by the Bravura font, but from what I can tell, it isn't that one. I don't see a symbol like that in Bravura, which si the font we rely on for uncommon symbols like that. You might want to discuss this with Steinberg, the providers of this font. If the symbol is provided, it's not hard to add support for it.
The star is not included in the SMuFL standard.
But see #108616: Add Tick Mark to Breath Marks in palette