Done or shown openly (5)
I believe the answer is:
overt
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">done or shown openly</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 overt that I've seen before include "Open and observable" , "Open and candid" , "Clear" , "Open, not 1 across" , "Plain and obvious" .)