Document that True/False/None don’t use :keyword: in doc
diff --git a/Doc/documenting/markup.rst b/Doc/documenting/markup.rst
index 4f1fcae..25801c7 100644
--- a/Doc/documenting/markup.rst
+++ b/Doc/documenting/markup.rst
@@ -472,7 +472,10 @@
.. describe:: keyword
- The name of a keyword in Python.
+ The name of a Python keyword. Using this role will generate a link to the
+ documentation of the keyword. ``True``, ``False`` and ``None`` do not use
+ this role, but simple code markup (````True````), given that they're
+ fundamental to the language and should be known to any programmer.
.. describe:: mailheader