||FieldDef, one of the meta stucture nodes it is used to define the
fields (using its nodes) of object types at this point has its
own nodes (FieldDefs) instead of MMObjectNodes but that will change
||One of the core objects, Defines one field of a object type / builder, has its
own builder called FieldDef (hitlisted)
||InsRel, the main relation object, holds relations, and methods to
||RelDef ,one of the meta stucture nodes, is used to define the possible relation types.
||TypeDef, one of the meta stucture nodes it is used to define the
object types (builders)
||TypeRel defines the allowed relations between two object types.