It's shown on a projector (5)
I believe the answer is:
slide
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">it's shown on a projector</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 slide that I've seen before include "Make mild fun of" , "Transparency" , "Microscope glass" , "Playground structure" , "Slip, slither, skid" .)