I am struggling to understand the restrictions on substitution functions.
For example:
1) can a function include "\score { ...}" or can it only be invoked INSIDE a \score?
2) is it possible to include \header { ...} inside a substitution function? It fails when I try, but I don't understand why.
I assume I am missing some basic concepts regarding their use.
Thanks!
Ken Ledeen
Mobile: 617-817-3183