A change nothing else on its line goes with.
A latched function turned on and off again shortly after, as an accent is, or off and on again, added or withdrawn.
Notes of one pitch, or held commands of one function, that overlap: a note struck again, two tied into one, one made longer.
What the version deletes on a line, and what it puts nearby in its place.
A held command of the version standing for a latched pair of the parent's.
Cancels punched across several lines at one place.
Why changes were taken for one edit.