Refs #32339 -- Added use_fieldset to Widget.

docs/ref/forms/api.txt

@@ -1160,6 +1160,12 @@ Attributes of ``BoundField``
         >>> print(f['message'].name)
         message
 
+.. attribute:: BoundField.use_fieldset
+
+    .. versionadded:: 4.1
+
+    Returns the value of this BoundField widget's ``use_fieldset`` attribute.
+
 .. attribute:: BoundField.widget_type
 
     Returns the lowercased class name of the wrapped field's widget, with any

docs/ref/forms/widgets.txt

@@ -315,6 +315,19 @@ foundation for custom widgets.
         ``<select multiple>`` don't appear in the data of an HTML form
         submission, so it's unknown whether or not the user submitted a value.
 
+    .. attribute:: Widget.use_fieldset
+
+        .. versionadded:: 4.1
+
+        An attribute to identify if the widget should be grouped in a
+        ``<fieldset>`` with a ``<legend>`` when rendered. Defaults to ``False``
+        but is ``True`` when the widget contains multiple ``<input>`` tags such as
+        :class:`~django.forms.CheckboxSelectMultiple`,
+        :class:`~django.forms.RadioSelect`,
+        :class:`~django.forms.MultiWidget`,
+        :class:`~django.forms.SplitDateTimeWidget`, and
+        :class:`~django.forms.SelectDateWidget`.
+
     .. method:: use_required_attribute(initial)
 
         Given a form field's ``initial`` value, returns whether or not the