On Tue, 18 May 2004 15:40 , Wolfgang Woehl <tito@rumford.de> sent:

>Modifying a region does not imply that I want to get rid of the original 
>region. So it's good to keep it. Although the modified region can 
>sonically/lengthwise differ totally from the original I would still 
>expect it to be called A' -- but this is user-interfacing (helps me to 
>keep track of what I did), internally it would be B I guess.
>
    I agree.  But, does it really matter what it is internally?  As long as the
user can track and undo it should be OK.

Jan