Accidental spelling?

Hello, I’m on Dorico Pro 2.1.10 and recall seeing in the manual that Dorico has some rules/algorithm for Accidental spelling? The attached PNG is an Atonal line for Oboe that I entered on my Midi keyboard. Since Dorico is varying the sharps and flats (and not always consistently for ascending/descending), I’m wondering what rules Dorico applies here when choosing sharps or flats if there’s no key signature (or if the intention is Atonal like here), since some of the choices aren’t what I’d expect. Does the specific instrument come into play in these rules (e.g. preference for flats for winds )?

Not a direct answer, but some discussion in the same vein: https://www.steinberg.net/forums/viewtopic.php?t=137910