Crossword Genius

Memo starter (4)

Ross

I think it could be either:

attn

inre

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">memo starter</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>

I've seen this clue in The New York Times and the LA Times.
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