About [[MediaWiki:Changeauthor-explanation-single/en]] and [[MediaWiki:Changeauthor-explanation-multi/en]]
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These messages could use INT (Changeauthor-changeauthors-single and -multi). Cheers
Never mind, I get it now. This is easy for -single, but not so easy for -multi because it's a parameterized message. Instead, should I reword the message to just say something like "the button below" without quoting the button's caption?
:) Yes, this is a possible and pragmatic alternative approach. I believe this would be better than the existing message since this definitively helps avoiding discrepancies between the translations.
However, you must be sure that's actually the position in all cases.