Orderly groupings (6)
I believe the answer is:
arrays
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">orderly groupings</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for arrays that I've seen before include "Lays out a display" , "Shows" , "Dresses in rich attire" , "orders" , "Impressive displays" .)