+1. The default for `facets` is `["xtargets", "subject", "author"]`
+
+2. The default for `perpage_options` is `[10, 20, 30, 50]`
+
+3. The default for `pp2_hostname` is `"sp-mkws.indexdata.com"`
+
+4. The default for `pp2_path` is `"service-proxy"`
+
+5. The default for `sort_options` is `[["relevance"], ["title:1", "title"], ["date:0", "newest"], ["date:1", "oldest"]]`
+
+6. The default for `sp_auth_path` is `"service-proxy/"`.