function to go to spot of last change

[Dan Jacobson]

Why of course, a function to get the user to the spot of last changes
in the current buffer(s?), that's what emacs must lack.

How many times have you found yourself mosying [<-not in spell
checker!?] thru a file when you wonder, where the heck was I just
editing? Well, the best you can do is hit undo, ^F, and undo again,
to get back. Hence the "burning need" for the additional function,
which you might name the-jacobson-memorial-function, due to its brilliance.
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