| DerivedField(name, function[, ...]) | This is the base class used to describe a cell-by-cell derived field. |
| EnzoFieldContainer | This is a container for Enzo-specific fields. |
| FieldInfoContainer | This is a generic field container. |
| OrionFieldContainer | All Orion-specific fields are stored in here. |
| ValidateDataField(field) | This validator ensures that the output file has a given data field stored |
| ValidateGridType() | This validator ensures that the data handed to the field is an actual |
| ValidateParameter(parameters) | This validator ensures that the parameter file has a given parameter. |
| ValidateProperty(prop) | This validator ensures that the data object has a given python attribute. |
| ValidateSpatial([ghost_zones, fields]) | This validator ensures that the data handed to the field is of spatial |