Theoretically (2,5)
I believe the answer is:
on paper
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">theoretically</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for on paper that I've seen before include "As written - in theory" , "In writing" , "Theoretically" , "Hypothetically" , "Planned (in theory)" .)