Hello and thank you for your reply. The reason for the not minimal example is because each staff has its own timing. This is polymetric notation, not simple notation. Each staff has its very own barlines, and when I put them in a group, the barlines are united only when the timing of the two staves coincides. This is my situation. I had no interest in non-polymetric notation for this effect at this time, although now that we are discussing this, it might come up. The reason for the many instances is to show how the bottom staff takes priority in different cases. My main issue is that what happens at the end and start of a staff system is not the same as in the middle.
I will try out your suggestions and get back to you. Thank you once again for your reply. S.A. -- Sent from: http://lilypond.1069038.n5.nabble.com/User-f3.html