If this is not a good idea, please say so, otherwise I'll log it on sf.

As a first-order approximation, the keys on a piano make a sound only
as long they are pressed.  A piano's sustain pedal has the effect of making
all the piano keys that are being played continue to sound after the keys
have been released, as long as you continue holding down the sustain pedal.
A MIDI sustain event behaves similarly except it sustains only the notes on
the same track as the sustain event.

If you write a multi-track piano composition in the notation editor,
you need to be able to simulate the effect of a piano's sustain pedal
using the sustain ruler.  Unfortunately and illogically in the case of a
piano composition, there is a separate sustain ruler for each track (staff).
This is both physically impossible for a real piano and positively unhelpful
if you are trying to compose for a real piano.

To simulate the true effect of the sustain pedal, you have to apply a
separate sustain event in the sustain ruler on each staff, which,
due to the need for manual positioning of the sustain events in the
different sustain rulers, means it is inevitable that there will be
small misalignments between the sustain events in each ruler.

Suggestion: There should be a single sustain ruler that works across all
tracks of the same instrument, and furthermore, as an additional option,
a single sustain ruler that works across all tracks of any instrument.

William


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