I have unsuccesfully tried to fine tune \mark with instructions like
\mark "\\raise 2mm \\hbox{Andante}"
\mark "\\raise 3mm \\fbox{A}"
but I get nothing in the 1st case and an empty box in the second.
Inspection of the .tex file shows that, for some reason, using the \\raise
request makes lilypond switch to the feta font, and this makes the
printing of plain text impossible.
Another problem I'm facing is the switching between different times in the
same score. I can switch between
\time 4/4;
...
\time 3/4;
...
\time 6/8;
...
\time 2/2;
without problems but I have not been succesful when I tried to
replace the C notation for 4/4 and the C| notation for 2/2.
Thank for your help in advance.
Ciao,
Antonio.