Editor's "never mind" (4)
I believe the answer is:
stet
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">editor's never mind</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for stet that I've seen before include "Notation meaning leave as is, don't change spelling" , "Notation meaning as is, thus" , "Instruction to cancel a deletion" , "Let it stand (printer's correction)" , "indicates second thoughts are not always better" .)