Specials allow special behavior on tables or fields.
DeletionMark: Used instead of a hard-delete on a record. A date in a date field or "true" in a boolean field will be set instead of deleting a record for deleteRecord(). The records then will not be retrieved by getRecords().
CreationDate: Indicates the date that the record was created.
LastUpdatedDate: Indicates the date the record was last updated.
Sorter: Each new record is given a new high value. Used to determine the order of records returned from getRecords() if no other order is specified.