ZeroZero - thanks for the thoughtful reply. I'd never thought of any of what you wrote, so obviously a strictly notation-based system would be inadequate.

But for those things which are used in standard notation and are easily conceptualized - like first and second endings, codas, etc. - I cannot believe this program is in its 10th version and these simple devices have not been created! Can we at least make these?

Again, thanks.