Electronic reading material? (1-4)
I believe the answer is:
e-book
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">electronic reading material?</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 e-book that I've seen before include "Literature from the internet" , "Downloaded volume" , "Online publication" , "Non-paper publication" , "Electronic reading material" .)