The same thing again (5)
I believe the answer is:
ditto
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">the same thing again</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ditto that I've seen before include "Two dots indicating the same again" , "Two small marks indicating the same again" , "Repeat the word above" , "Do alternative" , "Notation meaning the same again" .)