diff --git a/form/form_customization.rst b/form/form_customization.rst
index d5c27e3aa53..97c6cabe744 100644
--- a/form/form_customization.rst
+++ b/form/form_customization.rst
@@ -24,12 +24,30 @@ enough to render an entire form, including all its fields and error messages:
       by calling to the $form->createView() method #}
     {{ form(form) }}
 
-The next step is to use the :ref:`form_start() <reference-forms-twig-start>`,
+As short as this rendering is, it's not very flexible. The next step is to use the
+:ref:`form_start() <reference-forms-twig-start>`,
 :ref:`form_end() <reference-forms-twig-end>`,
-:ref:`form_errors() <reference-forms-twig-errors>` and
-:ref:`form_row() <reference-forms-twig-row>` Twig functions to render the
+:ref:`field_name() <reference-forms-twig-field-name>`,
+:ref:`field_value() <reference-forms-twig-field-value>` and
+:ref:`field_errors() <reference-forms-twig-field-errors>` Twig functions to render the
 different form parts so you can customize them adding HTML elements and attributes:
 
+// TODO
+
+Generic Form Rendering
+----------------------
+
+If you want to let the PHP code defining the structure of the form also describes
+how it should be displayed (for instance in the case of a reusable PHP package),
+you may want to rely on generic form rendering instead of individual Twig functions.
+
+To do so, you can use the
+:ref:`form_row() <reference-forms-twig-row>`,
+:ref:`form_widget() <reference-forms-twig-widget>`,
+:ref:`form_errors() <reference-forms-twig-errors>` and
+:ref:`form_rest() <reference-forms-twig-rest>`
+Twig functions to render the form parts generically:
+
 .. code-block:: html+twig
 
     {{ form_start(form) }}
@@ -74,6 +92,9 @@ control over how each form field is rendered, so you can fully customize them:
         </div>
     </div>
 
+Using these generic functions to render forms allow PHP code and general form themes to affect
+the way your fields will be displayed.
+
 .. note::
 
     Later in this article you can find the full reference of these Twig
diff --git a/reference/twig_reference.rst b/reference/twig_reference.rst
index b70dbb0e0aa..bed8a3ae36b 100644
--- a/reference/twig_reference.rst
+++ b/reference/twig_reference.rst
@@ -342,6 +342,12 @@ explained in the article about :doc:`customizing form rendering </form/form_cust
 * :ref:`form_help() <reference-forms-twig-help>`
 * :ref:`form_row() <reference-forms-twig-row>`
 * :ref:`form_rest() <reference-forms-twig-rest>`
+* :ref:`field_name() <reference-forms-twig-rest>`
+* :ref:`field_value() <reference-forms-twig-rest>`
+* :ref:`field_label() <reference-forms-twig-rest>`
+* :ref:`field_help() <reference-forms-twig-rest>`
+* :ref:`field_errors() <reference-forms-twig-rest>`
+* :ref:`field_choices() <reference-forms-twig-rest>`
 
 .. _reference-twig-filters: