Make cryptic (6)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">make cryptic</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 encode that I've seen before include "Put into cipher" , "Put into secret symbols" , "Encrypt" , "Put into secret writing" , "transform with substitutions?" .)