Hello again! I'm still trying to customize the Advanced Search. Now I need to add a language to the language search field. For some reason, it doesn't show Esperanto ("epo" according to ISO-639-2). Taking a look at file /usr/share/koha/opac/htdocs/opac-tmpl/bootstrap/en/modules/opac-advsearch.tt, which seems to govern Advanced Search interface, I find this: <fieldset> <legend>Language</legend> <!-- LANGUAGE LIMIT --> <p> <label for="language-limit">Language: </label> <select id="language-limit" name="limit"> <option value="">No limit</option> [% FOREACH search_languages_loo IN search_languages_loop %] [% IF ( search_languages_loo.selected ) %] <option value="ln,rtrn:[% search_languages_loo.iso639_2_code %]" selected="selected">[% search_languages_loo.language_description %]</option> [% ELSE %] <option value="ln,rtrn:[% search_languages_loo.iso639_2_code %]">[% search_languages_loo.language_description %]</option> [% END %] [% END %] </select> </p> <!-- /LANGUAGE LIMIT --> </fieldset> So, what should I do to add a language and its description to the list, or at least to take a look at the built-in list "search_languages_loop"? Also, is there any way of writing code to select "any language but X"? Rubén