+/**
+ * Defines internal constants for unambiguous annotation of DbRefEntry source
+ * strings and describing the data retrieved from external database sources (see
+ * jalview.ws.DbSourcProxy) <br/>
+ * TODO: replace with ontology to allow recognition of particular attributes
+ * (e.g. protein coding, alignment (ortholog db, paralog db, domain db),
+ * genomic, transcriptomic, 3D structure providing (PDB, MODBASE, etc) ..).
+ *
+ * @author JimP
+ *
+ */