Editing New Features in EPrints 3.1 (section)

=== cfg.d/eprint_fields.pl ===
We applied some of the new Extras render and order methods:
* title field: <tt>'make_single_value_orderkey' => 'EPrints::Extras::english_title_orderkey'</tt> - so when ordering by title, leading "a", "an" and "the" are ignored. If you add this as an upgrade you'll need to run <tt>epadmin reorder <i>repositoryid</i> eprint</tt>
* id_number field: <tt>'render_value' => 'EPrints::Extras::render_possible_doi'</tt> - which links to the DOI resolver if the field looks like a DOI.
* offical_url: <tt>'render_value' => 'EPrints::Extras::render_url_truncate_end'</tt> - this now chops the end of very long URLs for nicer page rendering.
* related_url: <tt>'render_value' => 'EPrints::Extras::render_related_url'</tt> - this is a renderer specifically for this field. It links the word "author", or "publisher", etc. to the URL. If no type is specified, it links the URL (truncated if over 40 chars).