But of course, spelling, grammar corrections, LaTeX fixes are all perfectly ok. I never found a problem with fpqc's edits so far(maybe there are ambiguities sometimes in retagging; but nothing significant).
]]>Indeed, I often (used to) rewrite question titles pretty thoroughly, and I'd encourage more people to do this. This more we can downplay the culture of "this is my inviolate text, corrections, modifications or criticisms are unacceptable" and instead have a culture of collaboratively preparing the best possible answers to the most interesting possible questions, the better mathoverflow will be.
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