| type | categorizes the relationship in some respect, e.g.
as social, personal or other. | 
|  | Datatype: CDATA | 
|  | Legal values: | | social | relationship concerned with social roles |  | personal | relationship concerned with personal roles, e.g.
kinship, marriage, etc. |  | other | other kinds of relationship | 
 | 
|  | Default: personal | 
| desc | briefly describes the relationship. | 
|  | Datatype: CDATA | 
|  | Values: an open list of application-dependent keywords | 
|  | Default: #IMPLIED | 
| active | identifies the ``active''participants in a non-mutual
relationship, or all the participants in a mutual one. | 
|  | Datatype: IDREFS | 
|  | Values: a list of identifier values for participant or participant
groups | 
|  | Default: #IMPLIED | 
| passive | identifies the ``passive'' participants in a non-mutual
relationship. | 
|  | Datatype: IDREFS | 
|  | Values: a list of identifier values for participant or participant
groups | 
|  | Default: #IMPLIED | 
| mutual | indicates whether the relationship holds equally amongst all the
participants. | 
|  | Datatype: (Y | N) | 
|  | Legal values: | | Y | the relationship is mutual |  | N | the relationship is directed | 
 | 
|  | Default: Y |