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$skip
Skips over the specified number of documents that pass into the stage and passes the remaining documents to the next stage in the pipeline.
The $skip stage has the following prototype form:
{ $skip: <positive integer> }
$skip takes a positive integer that specifies the maximum number of documents to skip.
Consider the following example:
db.article.aggregate([ { $skip : 5 } ]);
This operation skips the first 5 documents passed to it by the pipeline. $skip has no effect on the content of the documents it passes along the pipeline.
See also
Aggregation with the Zip Code Data Set, Aggregation with User Preference Data