Re: Mark_engraver in PianoStaff?

[Kieren MacMillan]

Hi Alexander,

> I want to typeset a piano reduction where the RehearsalMarks,
> MetronomeMarks and some TextSpanners (like rit. etc.) are shown  
> once in
> the Score context, but are additionally doubled above the  
> PianoStaff for
> the piano player.

I've often wanted to do this, and have never gotten around to coding  
the best solution…

In order to also support those situations where (e.g.) the marks come  
above the string staff group, my guess is you want to create a custom  
context which has *only* the Mark_engraver, include it in the main  
score GrandStaff at the appropriate positions, and remove  
Mark_engraver from all other contexts (i.e., Score, Staff, etc.) in  
that score.

It would be the mark equivalent of the TimeSig context (an example of  
which can be found in the docs and/or on the list). If I have a  
moment sometime soon, I'll whip up an example/template.

Hope this helps!
Kieren.