Goofs in proofs (6)
I believe the answer is:
errata
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">goofs in proofs</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 errata that I've seen before include "Noted mistakes" , "Boobs in a book" , "Mistakes in printed matter" , "Slips" , "List of text corrections to be made in a publication" .)