The diagrams in this directory are created from the RDFS files in the parallel /modules directory using the online RDF Gravity http://semweb.salzburgresearch.at/apps/rdf-gravity/download.html For each RDFS module, we present one or more graphs having one of the following "views": 1. The metamodel concept (rdfs:Class) tree shows the rdfs:subClass hierarchy. All symbols in this graph are concept nodes (rdfs:Class), with color-coding to indicate namespace blue: legalruleml green: xsd schema part 2 datatypes orange: ruleml (e.g. upper-subclass.png) 2. The bipartite graph shows the rdfs:domain and rdfs:range properties for the metamodel relationships (rdf:Property). The nodes of this graph alternate between concept (rectangle) and relationship (triangle). This diagram is similar to an entity-relationship model (ERM) although the conventional symbol for a relationship in ERM is a diamond rather than a triangle. RDFS does not distinguish between object and literal properties, however the properties whose range is colored green are data properties, as a green rectangle indicates an XSD datatype. (e.g. upper-properties.png) 3. A combined graph merges the concept tree and the bipartite graph. (e.g. context.png)