> For example: as soon as you've had more than one change in the entire
> history of the document, you need to start considering what the previous
> version against which you're showing differences is. If you try to do it
> against all of them, it very quickly becomes unwieldy; if you try to do
For me the better option is to point to a version of the file with all
its VCS history so people can see what's been changed when.
Stefan