Basic point (4)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">basic point</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 gist that I've seen before include "Essential idea" , "Substance or general idea" , "Real point or substance" , "Pith, essence" , "Key point" .)