Session Management

Key	Description	Type
`sessionId`	necessary to identify a specific user and allow that user access to X-Server services	long, alpha-numeric String
`groupNumber`	identifies a result set created by submitting a query with the /wiki/spaces/SLIB/pages/2921168923 command. This number is necessary for asynchronous searches, retrieving results and pagination	short, numeric String
`numRecordsFound`	the number of records found (can be very large)	int
`numRecordsFetched`	the number of records fetched	int
`assetIterator`	the AssetIterator (and contained Assets) associated with this search	`org.osid.repository.AssetIterator`

How do we know when a user's session is done? This is up to the consumer. In our case (using Servlets), we can choose when to invalidate a session: a timeout & when the search dialog is closed.
Will the metasearch engine support multiple users logged on at once? Yes.