From here:

image description

It is highly in doubt that @Robert Cartaino used to be @rcar. Should I edit this?

  • Is that bit needed in the answer? – Bart Aug 6 '15 at 9:19
  • Seems to me Robert didn't even mention using <sub>, so it's just confusing. (If the comment was changed, the pencil should show even for a moderator?) So in this case I'd remove the reference, not change it. – Arjan Aug 6 '15 at 11:17

You can, but you don't have to. You can even remove it I think since it doesn't look very necessary (maybe a reply to a comment or small attribution).

If you want to improve that post and make it easier to understand: go ahead. Fix it. Make sure to fix all possible issues, or some reviewers may decline it for such a small change.

Also I could argue it isn't very necessary, but a small improvement is an improvement.

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