Dear Moinard and Knute
Thank you for the tips on \hideNotes and \unHideNotes.
I coded 35 bars using \hidesNotes, only 4 bars need the \unHideNotes. I discovered this while coding. I have no idea. When I saw missing notes (even though I had coded in) I used \unHideNotes.
Question:
1. Do \hideNotes and \unHideNotes must be used in pairs?
2. How can I pass the nide note in using variables? ie hn = *3/4 (\hideNotes d8)
in my code I use f,2\hn
Thank you very much for your help.
Ming Tsang