Marked keystrokes with the :kbd: role.
Fixed the case of the "Ctrl-" prefixes.
diff --git a/Doc/tutorial/interpreter.rst b/Doc/tutorial/interpreter.rst
index 67f927f..5f37504 100644
--- a/Doc/tutorial/interpreter.rst
+++ b/Doc/tutorial/interpreter.rst
@@ -37,7 +37,7 @@
Unix, whoever installed the interpreter may have enabled support for the GNU
readline library, which adds more elaborate interactive editing and history
features. Perhaps the quickest check to see whether command line editing is
-supported is typing Control-P to the first Python prompt you get. If it beeps,
+supported is typing :kbd:`Control-P` to the first Python prompt you get. If it beeps,
you have command line editing; see Appendix :ref:`tut-interacting` for an
introduction to the keys. If nothing appears to happen, or if ``^P`` is echoed,
command line editing isn't available; you'll only be able to use backspace to