Fig. 4From: BioCarian: search engine for exploratory searches in heterogeneous biological databasesBiocarian has several features that can be used to organize facets and facet values. Facets can be deleted and activated with a context menu. The context menu also provides options to operate on facet values by ranking, filtering and sorting them. There is criteria box (shown as an inset) that shows the user the conditions of the current searchBack to article page