Substitution Class for all Nexus Attributes Substitution Class for all Meta Attributes the type of meta data both for Nexus Object (in the Nexus Attribut "meta") and for Nexus Attributes (as part of the attribute definition). Note that the Nexus Attribute "meta" does not have a "value" and a "meta" part! (no meta data for the meta data) a complex Nexus Attribute Type that contains the street address of an entity bundles the street adress information for an entity bundles the contact information for an entity the numbers of levels an entity occupies (used by object appartment). Should maybe be modeled with a relation. is true if the entity is intended to be used by handicapped people is true if the entity is intended to be used by women a menu is a list of meals and prices Meta Attribute of Nexus Objects a number of the entity - given in a for the entity meaningful way. Since numbering schemes can contain letters, this is not a numerical type but a string (i.e. room.number 24) a geographical area in which an entity is located (can be derived when both pos and accuracy are given a list of reverse references. This is only a preview how reverse references could look like in the next version of AWML!