unterminated bracket pedal

[Atte Andre Jensen]

I'd like to have |___/\___ and later (after no pedaling indication for a
while) ___/\___ and finally ___| with the new bracket pedal, is that
possible, and if so; how??

Two other things:

1) is there a shorthand for "\sustainUp \sustainDown"?
2) is there a way to define simple (or complex) text-substitution-style
macros, preferably with parameters? This would improve readability and
typing speed quite a lot...
-- 
love, peace & harmony
Atte