Editor's "keep it” (4)
I believe the answer is:
stet
'editor's keep it' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for stet that I've seen before include "Restorative direction needed" , "Printing instruction: "Let it stand"" , "Correction-reversing mark" , "Instruction to ignore amendment" , "It may stand" .)