Re: \set vs \override

[Nick Payne]

On this subject of set vs override, if I want rehearsal marks to be 
boxed letters and also want to use the letter I as a rehearsal mark, how 
can I do that. Each set command overwrites the previous value of the 
context property, so if I use:

   \set Score.markFormatter = #format-mark-box-letters
   \set Score.markFormatter = #format-mark-alphabet

then I get "I" as a rehearsal mark but the letters aren't boxed, and if 
I use:

   \set Score.markFormatter = #format-mark-alphabet
   \set Score.markFormatter = #format-mark-box-letters

then "I" is skipped as a rehearsal mark. I suppose, to answer my own 
question, I can keep count of the rehearsal marks and manually enter "I" 
myself:

\relative c' {
   \set Score.markFormatter = #format-mark-box-letters
   c c c c \mark \default
   c c c c \mark \default
   c c c c \mark \default
   c c c c \mark \default
   c c c c \mark \default
   c c c c \mark \default
   c c c c \mark \default
   c c c c \mark \default
   c c c c \mark\markup { \box I }
   c c c c \mark \default
   c c c c \mark \default
}

Nick