Avoid using \sk. commands, e.g. don't say:
\NOtes\hu C\sk\hu D&\qu{cdef}\en
but:
\NOtes\hu C&\qu{cd}\en
\NOtes\hu D&\qu{ef}\en
This because the program will automatically associate \NOTes with \hu. 

Stick \Notes and \set{clef, name, sign, staffs} commands left. Do not
put several \set{something} commands on the same line. Otherwise they
won't be seen. 

If you need notes closer to each other than provided by \notes, do not
create your own command similar to \notes, but say e.g. \multnoteskip{.7}
instead.

Do not create sophisticated macros, especially those involving commands
quoted above.

The parts produced may still require some work, e.g.:
- slurs and hairpins across bars,
- consecutive rest measures may need to be rewritten in \PAuse or \PAUSe,
with the corresponding number, and \barno needs be adjusted. 
- cue notes or the like. 



