gtk3/demos/widget-factory/help-overlay.ui

<interface>
  <object class="GtkShortcutsWindow" id="help_overlay">
    <child>
      <object class="GtkShortcutsSection">
        <property name="visible">1</property>
        <child>
          <object class="GtkShortcutsGroup">
            <property name="visible">1</property>
            <property name="title">General</property>
            <child>
              <object class="GtkShortcutsShortcut">
                <property name="visible">1</property>
                <property name="accelerator">F1</property>
                <property name="title">Show About Dialog</property>
              </object>
            </child>
            <child>
              <object class="GtkShortcutsShortcut">
                <property name="visible">1</property>
                <property name="accelerator">&lt;Primary&gt;q</property>
                <property name="title">Quit</property>
              </object>
            </child>
            <child>
              <object class="GtkShortcutsShortcut">
                <property name="visible">1</property>
                <property name="accelerator">&lt;Primary&gt;d</property>
                <property name="title">Switch to dark theme</property>
              </object>
            </child>
          </object>
        </child>
        <child>
          <object class="GtkShortcutsGroup">
            <property name="visible">1</property>
            <property name="title">Traditional</property>
            <property name="view">page2</property>
            <child>
              <object class="GtkShortcutsShortcut">
                <property name="visible">1</property>
                <property name="accelerator">&lt;Primary&gt;s</property>
                <property name="title">Search</property>
              </object>
            </child>
            <child>
              <object class="GtkShortcutsShortcut">
                <property name="visible">1</property>
                <property name="accelerator">Delete</property>
                <property name="title">Delete</property>
              </object>
            </child>
            <child>
              <object class="GtkShortcutsShortcut">
                <property name="visible">1</property>
                <property name="accelerator">&lt;Primary&gt;b</property>
                <property name="title">Set background</property>
              </object>
            </child>
          </object>
        </child>
        <child>
          <object class="GtkShortcutsGroup">
            <property name="visible">1</property>
            <property name="title">Modern</property>
            <property name="view">page3</property>
            <child>
              <object class="GtkShortcutsShortcut">
                <property name="visible">1</property>
                <property name="accelerator">&lt;Primary&gt;o</property>
                <property name="title">Open a file</property>
              </object>
            </child>
            <child>
              <object class="GtkShortcutsShortcut">
                <property name="visible">1</property>
                <property name="accelerator">&lt;Primary&gt;r</property>
                <property name="title">Start recording</property>
              </object>
            </child>
            <child>
              <object class="GtkShortcutsShortcut">
                <property name="visible">1</property>
                <property name="accelerator">&lt;Primary&gt;l</property>
                <property name="title">Lock or unlock</property>
              </object>
            </child>
          </object>
        </child>
      </object>
    </child>
  </object>
</interface>