The intention of this package is to simplify a common task in the work of RDF developers: remembering and looking up URI prefixes. The `rdf-prefix-insert' command is used to look up- and insert URIs based on a prefix. RDF prefixes are mapped to URIs by the alist `rdf-prefix-alist'. New prefixes can be defined by adding them to `rdf-prefix-alist', on the form (PREFIX . URI), where PREFIX and URI are both strings. The prefix list is updated regularly from http://prefix.cc/.