anchor.diff:  
   Just a remainder, you can only specify the fields of the root document and the direct nested documents that will be imported. 
   
  +
  +=== Errors and exceptions
  +
  +If something bad happens during the import, Neo4j Doc Manager should not stop. An error message should be thrown on the terminal. You can have more details by checking the file __mongo-connector.log__. It is also possible to increase the log details by initialising __mongo-connector__ with **-v** option:
  +
  +```
  +mongo-connector -v -m localhost:27017 -t http://localhost:7474/db/data -d neo4j_doc_manager
  +```
  +
  +This activates __verbose__ level. You can have a better explanation about what are the failure points by seraching for __OperationFailed__ on __mongo-connector.log__ file.
  +
  +
  
positive.code: You can notice that we have nested documents. We can specify only the root level fields that will be imported. For example:
  
  ```
  mongo-connector -v -m localhost:27017 -t http://localhost:7474/db/data -d neo4j_doc_manager -n test.talks -i room,session
  ```
  
  In Neo4j, we will have:
  
negative.code: We can filter the **fields** that will be imported specifying the command line parameter __-i__. For example, we can import only __room__ field:
  
  ```
  mongo-connector -m localhost:27017 -t http://localhost:7474/db/data -d neo4j_doc_manager -i room
  ```
  
  For this example, __timeslot__ would not be imported. It is also possible to specify multiple values:
  
  ```
  mongo-connector -m localhost:27017 -t http://localhost:7474/db/data -d neo4j_doc_manager -i room,timeslot,title
  ```
  
  If the specified field does not exist, only the existing ones will be imported. In the example, only __room__ and __timeslot__ will be imported.
  