Remove reST markup from --help output. Also: O(n**2) is dict construction, not single insertion.
diff --git a/Modules/main.c b/Modules/main.c
index 12376ae..824fb3a 100644
--- a/Modules/main.c
+++ b/Modules/main.c
@@ -105,9 +105,9 @@
PYTHONIOENCODING: Encoding[:errors] used for stdin/stdout/stderr.\n\
";
static char *usage_6 = "\
-PYTHONHASHSEED: if this variable is set to ``random``, the effect is the same \n\
- as specifying the :option:`-R` option: a random value is used to seed the\n\
- hashes of str, bytes and datetime objects. It can also be set to an integer\n\
+PYTHONHASHSEED: if this variable is set to 'random', the effect is the same\n\
+ as specifying the -R option: a random value is used to seed the hashes of\n\
+ str, bytes and datetime objects. It can also be set to an integer\n\
in the range [0,4294967295] to get hash values with a predictable seed.\n\
";