Multi graph is not adequately explained
Also in 3.5 RDF graph, in the Note: - RDF Graphs are "node-labeled, edge-labeled directed multi-graphs" (with no disjointness constraints between node-labels and edge-labels): the multi- aspect is not in the note (i.e., that there can be several arcs between the two same nodes -- maybe with different labels).
See: http://lists.w3.org/Archives/Public/www-rdf-comments/2002JulSep/0164.html
Aspects of multi graph not fully explained.
[GK] Editorial fixes clearly in JJC's text.
See: http://lists.w3.org/Archives/Public/www-rdf-comments/2002OctDec/0125.html
Citation is Jeremy's response