Last modified: 2011-03-13 18:05:03 UTC
For permanent links do not show #mw-revisiontag-old for latest oldid if revision is flagged.
There is no further sighted rev, that could be "... based off this revision."!
"Based off" means "flagged". The revision text is what flagged revs are based off. But templates and images can vary. This is just a wording issue if anything.