diff --git a/2000/natori/README.md b/2000/natori/README.md
index c7a8061cb..62c981682 100644
--- a/2000/natori/README.md
+++ b/2000/natori/README.md
@@ -4,6 +4,10 @@
 make
 ```
 
+An alt version exists for those in the southern hemisphere (or those who want to
+see what it would be in the southern hemisphere). See [alternate
+version](#alternate-code) below.
+
 
 ## To use:
 
@@ -11,9 +15,6 @@ make
 ./natori
 ```
 
-NOTE: an alternate version exists for those in the southern hemisphere. See the
-Alternate code section below for more details.
-
 
 ### Try:
 
@@ -26,13 +27,21 @@ or else just by the code itself. Bonus points if you can make it show all!
 The author noted that those in the southern hemisphere might want to change
 `acos(l/2)` into `acos(-l/2)` which we have done in the alternate version.
 
+
+### Alternate build:
+
 To run the alternate code that supports the southern hemisphere:
 
 ```sh
 make alt
 ```
 
-Use `natori.alt` as you would `natori`.
+
+### Alternate use:
+
+```sh
+./natori.alt
+```
 
 What happens if you run it in the northern hemisphere? Are there any
 differences?
@@ -43,14 +52,14 @@ versions? Or are there any?
 
 ## Judges' remarks:
 
-Here is a nice compact program that changes with the phase of the moon.
+Here is a nice compact program that changes with the phase of the Moon.
 Can you figure out how it does it?
 
 The ANSI-C committee, among their multiple misdeeds, broke perfectly
 fun C programs by making it intractable for them to declare their
-own non-traditional prototype for main().  We have had to uglify this
+own non-traditional prototype for `main()`.  We have had to uglify this
 program in order to try and prevent C compilers form failing to
-compile due to the unusual arg types of the main() function.
+compile due to the unusual arg types of the `main()` function.
 
 
 ## Author's remarks: