On time, batch edit and save

The piano roll is a nice improvement visually and otherwise. Just a couple of minor points. The description in the handbook makes it easy to think for a moment that "on time" is the amount of time that a note is on, in other words, the duration of a "note on" event. "Start time" might be clearer. The drag (right click shift) in the display area works but is very difficult to control, in so far as values may be off 15-20 clicks routinely. The resolution of "1000" is pretty fine grained. The visual appearance of the changes seem to be more noticeable in chunks of clicks, at least to the eye. I am curious about the save option. I edited within a recently created midi file exported from Msc. but the only save option I had was mscz. It seems that in the past I could save the changes to the midi file. In any case, I will start using this inside Msc. especially with the greater (and better) windows viewing flexibility. Whoever did this. Great job!