#16677: rename section header and fix markup.
diff --git a/Doc/reference/expressions.rst b/Doc/reference/expressions.rst
index bc9f1b4..e5955bf 100644
--- a/Doc/reference/expressions.rst
+++ b/Doc/reference/expressions.rst
@@ -1339,8 +1339,8 @@
.. _operator-summary:
-Summary
-=======
+Operator precedence
+===================
.. index:: pair: operator; precedence
@@ -1363,9 +1363,9 @@
+-----------------------------------------------+-------------------------------------+
| :keyword:`and` | Boolean AND |
+-----------------------------------------------+-------------------------------------+
-| :keyword:`not` *x* | Boolean NOT |
+| :keyword:`not` ``x`` | Boolean NOT |
+-----------------------------------------------+-------------------------------------+
-| :keyword:`in`, :keyword:`not` :keyword:`in`, | Comparisons, including membership |
+| :keyword:`in`, :keyword:`not in`, | Comparisons, including membership |
| :keyword:`is`, :keyword:`is not`, ``<``, | tests and identity tests, |
| ``<=``, ``>``, ``>=``, ``<>``, ``!=``, ``==`` | |
+-----------------------------------------------+-------------------------------------+
@@ -1391,7 +1391,7 @@
+-----------------------------------------------+-------------------------------------+
| ``(expressions...)``, | Binding or tuple display, |
| ``[expressions...]``, | list display, |
-| ``{key:datum...}``, | dictionary display, |
+| ``{key: value...}``, | dictionary display, |
| ```expressions...``` | string conversion |
+-----------------------------------------------+-------------------------------------+