IMHO, you already have an answer and you can already know what is possible and what will remain possible in the future:
1) If you are planning to *copy* non standard notation (like Stockhausen, Penderecki etc.) you can simply use LilyPond + Inkscape. Just write a stub with Lilypond for the standard part and then use Inkscape for the non standard part. 2) if you are planning to write new music in non-standard notation, it is impossibile that a notation software will accomplish that, because that notation is not standardized, nor there is a list of rules, nor there is a shared procedure. Best, Paolo On Saturday, January 30, 2021, Trevor <t.dani...@treda.co.uk> wrote: > Forwarding to LilyPond development list as I am no longer actively > involved in Lily's development > > Trevor > > ------ Original Message ------ > From: "Leonid Hrabovsky" <lhrabov...@gmail.com> > To: t.dani...@treda.co.uk > Sent: 30/01/2021 02:17:46 > Subject: Very Simple question > > Dear Mr.Daniels, >> as a composer using the most advanced notation forms, and being >> disappointed by inability of both Sibelius and Finale to meet my needs, I >> turned recently to LilyPond and see that there is a real hope for me to >> typeset my old scores still waiting since 1960-s. I have downloaded all >> manuals and feel that there are some hidden smart tricks allowing most >> crazy notational phenomena. But when I look into 2.8 Contemporary music >> section of Notation, I see that most sub-chapters here are still empty. So >> my question to you - how soon I and other users may expect the appearance >> of exhaustive covering all kinds of notation like Stockhausen, early >> Penderecki, Lutoslawski e.a.? Some isolated moments of it I see in >> Snippets, but it is far from enough for me. >> Thank you in advance for your answer. >> >> Very truly yours, >> >> Leonid Hrabovsky >> Леонід - Leonid >> >> >> Virus-free. www.avast.com <https://www.avast.com/sig-ema >> il?utm_medium=email&utm_source=link&utm_campaign=sig-email&u >> tm_content=webmail&utm_term=link> >> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> >> > > >