OPTIONS

$comment

$comment

The $comment makes it possible to attach a comment to a query. Because these comments propagate to the profile log, adding $comment modifiers can make your profile data much easier to interpret and trace. Use one of the following forms:

db.collection.find( { <query> } )._addSpecial( "$comment", <comment> )
db.collection.find( { $query: { <query> }, $comment: <comment> } )
←   Query Modifiers $explain  →
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