diff --git a/docs/admin/engines/configured_engines.rst b/docs/admin/engines/configured_engines.rst
index fa1e5a4b0..9507c77df 100644
--- a/docs/admin/engines/configured_engines.rst
+++ b/docs/admin/engines/configured_engines.rst
@@ -6,49 +6,66 @@ Configured Engines
 
 .. sidebar:: Further reading ..
 
+   - :ref:`settings categories_as_tabs`
    - :ref:`engines-dev`
    - :ref:`settings engine`
-
-Explanation of the :ref:`general engine configuration` shown in the table
-:ref:`configured engines`.
+   - :ref:`general engine configuration`
 
 .. jinja:: searx
 
-   SearXNG supports {{engines | length}} search engines (of which {{enabled_engine_count}} are enabled by default).
+   SearXNG supports {{engines | length}} search engines of which
+   {{enabled_engine_count}} are enabled by default.
+
+   Engines can be assigned to multiple :ref:`categories <engine categories>`.
+   The UI displays the tabs that are configured in :ref:`categories_as_tabs
+   <settings categories_as_tabs>`.  In addition to these UI categories (also
+   called *tabs*), engines can be queried by their name or the categories they
+   belong to, by using a :ref:`\!bing syntax <search-syntax>`.
+
+.. contents:: Contents
+   :depth: 2
+   :local:
+   :backlinks: entry
+
+.. jinja:: searx
 
    {% for category, engines in categories_as_tabs.items() %}
 
-   {{category}} search engines
+   tab ``!{{category.replace(' ', '_')}}``
    ---------------------------------------
 
-   {% for group, engines in engines | group_engines_in_tab %}
+   {% for group, group_bang, engines in engines | group_engines_in_tab %}
 
    {% if loop.length > 1 %}
-   {{group}}
+   {% if group_bang %}group ``{{group_bang}}``{% else %}{{group}}{% endif %}
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    {% endif %}
 
    .. flat-table::
       :header-rows: 2
       :stub-columns: 1
+      :widths: 10 1 10 1 1 1 1 1 1 1
 
       * - :cspan:`5` Engines configured by default (in :ref:`settings.yml <engine settings>`)
         - :cspan:`3` :ref:`Supported features <engine file>`
 
       * - Name
-        - Shortcut
+        - !bang
         - Module
         - Disabled
         - Timeout
         - Weight
         - Paging
-        - Language, Region
+        - Locale
         - Safe search
         - Time range
 
       {% for mod in engines %}
 
       * - `{{mod.name}} <{{mod.about and mod.about.website}}>`_
+          {%- if mod.about and  mod.about.language %}
+          ({{mod.about.language | upper}})
+          {%- endif %}
         - ``!{{mod.shortcut}}``
         - {%- if 'searx.engines.' + mod.__name__ in documented_modules %}
           :py:mod:`~searx.engines.{{mod.__name__}}`
@@ -56,9 +73,6 @@ Explanation of the :ref:`general engine configuration` shown in the table
           :origin:`{{mod.__name__}} <searx/engines/{{mod.__name__}}.py>`
           {%- endif %}
         - {{(mod.disabled and "y") or ""}}
-          {%- if mod.about and  mod.about.language %}
-          ({{mod.about.language | upper}})
-          {%- endif %}
         - {{mod.timeout}}
         - {{mod.weight or 1 }}
         {% if mod.engine_type == 'online' %}
diff --git a/searx/static/themes/simple/src/less/definitions.less b/searx/static/themes/simple/src/less/definitions.less
index ef6b02b2c..e5a11ff2b 100644
--- a/searx/static/themes/simple/src/less/definitions.less
+++ b/searx/static/themes/simple/src/less/definitions.less
@@ -113,8 +113,8 @@
   --color-toolkit-engine-tooltip-background: #fff;
   --color-toolkit-loader-border: rgba(0, 0, 0, 0.2);
   --color-toolkit-loader-borderleft: rgba(255, 255, 255, 0);
-  --color-doc-code: #300;
-  --color-doc-code-background: #fdd;
+  --color-doc-code: #003;
+  --color-doc-code-background: #ddeaff;
 }
 
 .dark-themes() {
@@ -225,8 +225,8 @@
   --color-toolkit-engine-tooltip-background: #222;
   --color-toolkit-loader-border: rgba(255, 255, 255, 0.2);
   --color-toolkit-loader-borderleft: rgba(0, 0, 0, 0);
-  --color-doc-code: #fdd;
-  --color-doc-code-background: #300;
+  --color-doc-code: #ddd;
+  --color-doc-code-background: #4d5a6f;
 }
 
 /// Dark Theme (autoswitch based on device pref)
diff --git a/searx/static/themes/simple/src/less/info.less b/searx/static/themes/simple/src/less/info.less
index 8c83c379d..f354135d2 100644
--- a/searx/static/themes/simple/src/less/info.less
+++ b/searx/static/themes/simple/src/less/info.less
@@ -1,9 +1,10 @@
 .info-page {
   code {
     font-family: monospace;
-    color: var(--color-doc-code);
+    .rounded-corners-tiny;
     background-color: var(--color-doc-code-background);
-    padding: 2px 5px;
-    .rounded-corners(5px);
+    color: var(--color-doc-code);
+    padding: 0.2rem;
+    border: 0 none;
   }
 }
diff --git a/searx/static/themes/simple/src/less/preferences.less b/searx/static/themes/simple/src/less/preferences.less
index 6913bbb90..4f446245a 100644
--- a/searx/static/themes/simple/src/less/preferences.less
+++ b/searx/static/themes/simple/src/less/preferences.less
@@ -72,6 +72,15 @@
     font-size: 90%;
   }
 
+  .bang {
+    .ltr-text-align-left();
+    .rounded-corners-tiny;
+    background-color: var(--color-doc-code-background);
+    color: var(--color-doc-code);
+    padding: 0.2rem;
+    border: 0 none;
+  }
+
   table {
     border-collapse: collapse;
   }
@@ -114,6 +123,10 @@
         .engine-description {
           margin-top: 0.5rem;
         }
+
+        .bang {
+          margin: 0.3rem;
+        }
       }
     }
 
diff --git a/searx/templates/simple/preferences.html b/searx/templates/simple/preferences.html
index 70c150581..170dffa39 100644
--- a/searx/templates/simple/preferences.html
+++ b/searx/templates/simple/preferences.html
@@ -32,7 +32,8 @@
       {{ _('View error logs and submit a bug report') -}}
     </a>
     {%- endif -%}
-
+    <p><span class="right">{{ _("!bang for this engine") }}</span>{% for bang in [search_engine.name] + [search_engine.shortcut] %}<span class="bang"> {{ '!' + bang.replace(' ', '_') }}</span>{% endfor %}</p>
+    <p><span class="right">{{ _("!bang for its categories") }}</span>{% for bang in search_engine.categories %}<span class="bang"> {{ '!' + bang.replace(' ', '_') }}</span>{% endfor %}</p>
 </div>
 {%- endif -%}
 {%- endmacro %}
@@ -309,7 +310,7 @@
       <tr>{{- "" -}}
         <th class="engine_checkbox">{{ _("Allow") }}</th>{{- "" -}}
         <th class="name">{{ _("Engine name") }}</th>{{- "" -}}
-        <th class="shortcut">{{ _("!bang") }}</th>{{- "" -}}
+        <th class="shortcut">{{ _("Bang") }}</th>{{- "" -}}
         <th>{{ _("Supports selected language") }}</th>{{- "" -}}
         <th>{{ _("SafeSearch") }}</th>{{- "" -}}
         <th>{{ _("Time range") }}</th>{{- "" -}}
@@ -317,9 +318,12 @@
         <th>{{ _("Max time") }}</th>{{- "" -}}
         {%- if enable_metrics %}<th>{{ _("Reliability") }}</th>{% endif -%}
       </tr>
-      {% for group, engines in engines_by_category[categ] | group_engines_in_tab %}
+      {% for group, group_bang, engines in engines_by_category[categ] | group_engines_in_tab %}
       {% if loop.length > 1 %}
-      <tr><th colspan="9" class="engine-group">{{_(group)}}</th></tr>
+      <tr>
+        <th class="engine-group" colspan="2">{{_(group)}}</th>
+        <th class="engine-group" colspan="7">{% if group_bang %}<span class="bang">{{group_bang}}</span>{% endif %}</th>
+      </tr>{{- "" -}}
       {% endif %}
       {% for search_engine in engines %}
       {% if not search_engine.private %}
@@ -329,13 +333,13 @@
         <th class="name" data-engine-name="{{ search_engine.name }}">{% if search_engine.enable_http %}{{ icon_big('warning', 'No HTTPS') }}{% endif -%}
           <label for="{{ engine_id }}">
             {{- search_engine.name -}}
-            {%- if search_engine.about and search_engine.about.language -%}
+            {%- if search_engine.about and search_engine.about.language %}
               ({{search_engine.about.language | upper}})
             {%- endif -%}
           </label>
           {{- engine_about(search_engine) -}}
         </th>{{- "" -}}
-        <td class="shortcut">{{ shortcuts[search_engine.name] }}</td>{{- "" -}}
+        <td class="shortcut"><span class="bang">{{ '!' + shortcuts[search_engine.name] }}</span></td>{{- "" -}}
         <td>{{ checkbox(None, supports[search_engine.name]['supports_selected_language'], true) }}</td>{{- "" -}}
         <td>{{ checkbox(None, supports[search_engine.name]['safesearch'], true) }}</td>{{- "" -}}
         <td>{{ checkbox(None, supports[search_engine.name]['time_range_support'], true) }}</td>{{- "" -}}
diff --git a/searx/webutils.py b/searx/webutils.py
index 4b11a15af..470833291 100644
--- a/searx/webutils.py
+++ b/searx/webutils.py
@@ -242,4 +242,9 @@ def group_engines_in_tab(engines: Iterable[Engine]) -> List[Tuple[str, Iterable[
     subgroups = itertools.groupby(sorted(engines, key=get_subgroup), get_subgroup)
     sorted_groups = sorted(((name, list(engines)) for name, engines in subgroups), key=group_sort_key)
 
-    return [(groupname, sorted(engines, key=engine_sort_key)) for groupname, engines in sorted_groups]
+    ret_val = []
+    for groupname, engines in sorted_groups:
+        group_bang = '!' + groupname.replace(' ', '_') if groupname != NO_SUBGROUPING else ''
+        ret_val.append((groupname, group_bang, sorted(engines, key=engine_sort_key)))
+
+    return ret_val