Do you mean multiple LilyPond source files in different tabs? This works for me on Windows 10.
--- Knute Snortum (via Gmail) On Thu, Jan 9, 2020 at 10:40 AM yming tsang <outlook_eab5152cd97f6...@outlook.com> wrote: > > I install frecobaldi 3.1.1 in window 10. The score wizard is working. > > However, I cannot open multiple lilypond file. > > > > Sent from Mail for Windows 10 > >