Plain to see (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">plain to see</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for overt that I've seen before include "Done or shown openly" , "Not locked away" , "Done in an obvious way" , "Open, not secret or hidden" , "Open, up front" .)
(Other definitions for manifest that I've seen before include "Express" , "Obvious, like ship's cargo list" , "Clear, obvious" , "Ship's document; plain" , "Conspicuous; cargo list" .)