RE: Negative [?] note duration? h-h-huh?

> I've always had the theoretical goal in MIDI::Simple and elsewhere that it
> should not be possible to produce notes at negative start-times or with
> negative durations.

In my MIDI manipulations, I've never found a need for negative durations,
but I've definitely found that negative start-times are useful to
have.  Think of a measure of music with a lead-in note that starts before
the measure starts - for some manipulations, you want the start of the
measure to be at time 0, which means that the starting-time of the first
note would be negative.  My 2 cents.       ...Tim...