+Element Widget Type Default Description
+-------- ------ ----- --------- ------------
+auth_hostname
+
+autosearch
+
+facet
+
+facet_caption_*
+
+facet_max_*
+
+facets array *Note 1* Ordered list of names of facets to display. Supported facet names are
+ `xtargets`, `subject` and `author`.
+
+lang string en Code of the default language to display the UI in. Supported language codes are
+ `en` = English, `de` = German, `da` = Danish, and whatever additional languages
+ are configured using `language_*` entries (see below).
+
+lang_options array [] A list of the languages to offer as options. If empty (the default), then all
+ configured languages are listed.
+
+language_* hash Support for any number of languages can be added by providing entries whose
+ name is `language_` followed by the code of the language. See the separate
+ section below for details.
+
+limit
+
+log_level int 1 Level of debugging output to emit. 0 = none, 1 = messages, 2 = messages with
+ datestamps, 3 = messages with datestamps and stack-traces.
+
+maxrecs
+
+paragraphs
+
+pazpar2_url string *Note 2* The URL used to access the metasearch middleware. This service must be
+ configured to provide search results, facets, etc. It may be either unmediated
+ or Pazpar2 the MasterKey Service Proxy, which mediates access to an underlying
+ Pazpar2 instance. In the latter case, `service_proxy_auth` must be provided.
+
+perpage
+
+perpage_default string 20 The initial value for the number of records to show on each page.
+
+perpage_options array *Note 3* A list of candidate page sizes. Users can choose between these to determine how
+ many records are displayed on each page of results.
+
+pp2_hostname
+
+pp2_path
+
+query
+
+query_width int 50 The width of the query box, in characters.
+
+responsive_design_width int If defined, then the facets display moves between two locations as the
+ screen-width varies, as described above. The specified number is the threshhold
+ width, in pixels, at which the facets move between their two locations.
+
+scan_all_nodes
+
+sentences