The OM_object data type is used as a handle to either a private or a public object. Its C declaration is as follows:
typedef struct OM_descriptor_struct *OM_object;
A data value of this data type represents an object, which can be either public or private. It is an ordered sequence of one or more instances of the OM_descriptor data type. See the OM_private_object and OM_public_object data types for restrictions on that sequence.