Create a new notebook range. If start is not
before or equal to end, the values will be swapped.
start index
end index.
The zero-based start index of this range.
The exclusive end index of this range (zero-based).
true if start and end are equal.
Derive a new range for this range.
An object that describes a change to this range.
A range that reflects the given change. Will return this range if the change
is not changing anything.
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A notebook range represents an ordered pair of two cell indices. It is guaranteed that start is less than or equal to end.