[BRX]

I recommend to have a look at Jef Moine's abc2svg and his online editor and associated web pages at

http://moinejf.free.fr/js/edit-1.xhtml

IMHO it's the most advanced ABC program and has a lot of nice features (for instance the %%grid parameter I suggested to Jef and he kindly put it into his program).
Sadly Mike can't use abc2svg for MS and decided to use the older program created by Jef abcm2ps which he isn't developing any further bugfixing it so it doesn't have the new stuff.

But it is great to have at least  abcm2ps in MS.

I'm often looking in

http://moinejf.free.fr/abcm2ps-doc/index.html

and

http://moinejf.free.fr/abcm2ps-doc/index.html

for capabilities and parameters of abc2svg.