When the first vote to close-as-duplicate is cast, the Math SE software also posts a comment that says
This question is similar to: …. If you believe it’s different, please edit the question, make it clear how it’s different and/or how the answers on that question are not helpful for your problem.
Until recently the text was different:
Does this answer your question? …
and I think that before that it was something else.
When did the wording change?