Marked keystrokes with the :kbd: role.
Fixed the case of the "Ctrl-" prefixes.
diff --git a/Lib/unittest/main.py b/Lib/unittest/main.py
index b253679..ca99ac6 100644
--- a/Lib/unittest/main.py
+++ b/Lib/unittest/main.py
@@ -174,7 +174,7 @@
                               action='store_true')
         if self.catchbreak != False:
             parser.add_option('-c', '--catch', dest='catchbreak', default=False,
-                              help='Catch ctrl-C and display results so far',
+                              help='Catch Ctrl-C and display results so far',
                               action='store_true')
         if self.buffer != False:
             parser.add_option('-b', '--buffer', dest='buffer', default=False,