Limits the number of documents that the cursor returns.
This method must be called before beginning iteration in order to have effect. If multiple calls to limit() are made, the one with the lowest limit will be chosen.
The maximum number number of documents to return. A value of zero means unlimited.
the same cursor
http://docs.mongodb.org/manual/reference/method/cursor.limit
See Implementation
Limits the number of documents that the cursor returns.
This method must be called before beginning iteration in order to have effect. If multiple calls to limit() are made, the one with the lowest limit will be chosen.