Issue #19795: Mark up None as literal text.
diff --git a/Doc/c-api/none.rst b/Doc/c-api/none.rst
index aeaca97..f8909b9 100644
--- a/Doc/c-api/none.rst
+++ b/Doc/c-api/none.rst
@@ -2,8 +2,8 @@
.. _noneobject:
-The None Object
----------------
+The ``None`` Object
+-------------------
.. index:: object: None
diff --git a/Doc/c-api/unicode.rst b/Doc/c-api/unicode.rst
index 85800c5..7c056f4 100644
--- a/Doc/c-api/unicode.rst
+++ b/Doc/c-api/unicode.rst
@@ -856,11 +856,11 @@
decode characters.
Decoding mappings must map single string characters to single Unicode
-characters, integers (which are then interpreted as Unicode ordinals) or None
+characters, integers (which are then interpreted as Unicode ordinals) or ``None``
(meaning "undefined mapping" and causing an error).
Encoding mappings must map single Unicode characters to single string
-characters, integers (which are then interpreted as Latin-1 ordinals) or None
+characters, integers (which are then interpreted as Latin-1 ordinals) or ``None``
(meaning "undefined mapping" and causing an error).
The mapping objects provided must only support the __getitem__ mapping
@@ -917,7 +917,7 @@
*NULL* when an exception was raised by the codec.
The *mapping* table must map Unicode ordinal integers to Unicode ordinal
- integers or None (causing deletion of the character).
+ integers or ``None`` (causing deletion of the character).
Mapping tables need only provide the :meth:`__getitem__` interface; dictionaries
and sequences work well. Unmapped character ordinals (ones which cause a
@@ -1019,7 +1019,7 @@
resulting Unicode object.
The mapping table must map Unicode ordinal integers to Unicode ordinal integers
- or None (causing deletion of the character).
+ or ``None`` (causing deletion of the character).
Mapping tables need only provide the :meth:`__getitem__` interface; dictionaries
and sequences work well. Unmapped character ordinals (ones which cause a