Fixes in 1992/nathan/README.md

Restore absent-minded change of make all to make nathan.

Fix typos.

Fix formatting (the text in the sections is indented which makes it all
code blocks). This problem is probably because originally the file was
not README.md (though it was still considered markdown). Many other
README.md files have this problem which I will fix in time.

1992/nathan/README.md

@@ -9,7 +9,7 @@
 
 ## To build:
 
-        make nathan
+        make all
 
 ### To run
 
@@ -18,21 +18,24 @@
 ## Judges' comments
 
 Try:
+
 	./nathan obfuscate < nathan.c > foobarf.c
 	./nathan - obfuscate < foobarf.c > barfoof.c
 	diff nathan.c barfoof.c
 
-    WARNING:
+### WARNING:
+
 The judges make no claim as to the strength or security
 of this program.  It is likely to be nil, or the next
 best thing to it.  Still, you might consider installing
 it in /usr/games/nathan.  :-)
 
-    NOTE: 
+### NOTE:
-	The 'winning' catagory is also open to question.  One could say
+
+The 'winning' category is also open to question.  One could say
 that it is a 'file obfuscator'.  One could also say that it
 unintentionally abused the intent of rule #7 (that programs
-	should be freely redistributable).  We suspect that the author
+should be freely re-distributable).  We suspect that the author
 may not have intended to do this, but that is the way things go
 sometimes.
 
@@ -42,17 +45,17 @@
 take the contest into unexpected territory.
 
 
-### Historical notes for this entry from the judges
+### Historical notes from the judges about this entry
 
-    The US International Traffic in Arms Regulations controls certain
+The US International Traffic in Arms Regulations controls certain exportations
-    exportations going out of the United States.  The U.S.  Munitions
+going out of the United States.  The U.S.  Munitions List gives the specific
-    List gives the specific categories of restricted exports.  Because
+categories of restricted exports.  Because this entry at one time appeared to
-    this entry at one time appeared to fall under this restricted catagory, the
+fall under this restricted category, the judges originally were not able to
-    judges originally were not able to distribute winners outside of the USA.
+distribute winners outside of the USA.
+
+Nathan Sidwell stated that he was willing to distribute the winning source.  To
+read HIS instructions of how to obtain his winning program one was able to run:
 
-    Nathan Sidwell stated that he was willing to distribute the
-    winning source.  To read HIS instructions of how to obtain his
-    winning program one was able to run:
 
 	make nathan
 	./nathan
@@ -60,34 +63,37 @@
 
     to learn how to get a copy of the code.
 
+See the 1992/nathan.c file in the
+[../../archive/archive-1992.tar.bz2](archive/archive-1992.tar.bz2) tarball if
+you're interested in this file.
+
 
 ### Personal note from chongo:
 
-    I think the situation showed just how ridiculous US crypto
+I think the situation showed just how ridiculous US crypto regulations really
-    regulations really were/are.  Certain US federal officials can get away
+were/are.  Certain US federal officials can get away with shipping arms to
-    with shipping arms to certain nations in apparent violation of US
+certain nations in apparent violation of US laws, but I personally can't
-    laws, but I personally can't re-distribute a program contest winner
+re-distribute a program contest winner to the network!
-    to the network!
 
 ## Author's comments
 
-    PROGRAM USE
+### PROGRAM USE
 
-    This program is a hello world text encrypter/decrypter. It uses an
+This program is a hello world text encryptor/decryptor. It uses an
 enigma (I think) style encryption algorithm, where the encryption
 key character is modified by a value, determined from the previous
 character.  Non-printable characters (those with ASCII values < ' '
 or > 0x7e) are passed unaltered, thus any kind of file may be
-    successfully procesed, but if the original is printable, the
+successfully processed, but if the original is printable, the
 processed file will be too. The input is read from stdin, and the
 output presented to stdout. The key, a text string, is presented as
-    a command argument. This is optional, and if ommitted, the file is
+a command argument. This is optional, and if omitted, the file is
 self-{de,en}crypted. To specify decryption, a "-" should be given
-    before the key. (Actually encryption and dycryption proper inverse
+before the key. (Actually encryption and decryption proper inverse
 operations, so you can use decrypt to scramble and encrypt to
 descramble, if you're perverse.)
 
-    PORTABILITY (A little knowledge is a dangerous thing)
+### PORTABILITY (A little knowledge is a dangerous thing)
 
 It's written in ANSI C, and doesn't even assume an ASCII character
 set, (it has an array of the characters to convert), so should be
@@ -96,14 +102,14 @@
 warnings on other platforms though).  Because I've heard that
 conditional jumps slow down fast processors, I've eliminated all
 the ifs from the code, indeed, as its only one statement, it should
-    compile to one instruction an a suitably designed CISC machine. To
+compile to one instruction and a suitably designed CISC machine. To
 speed compilation, there is only one statement in the loop, so that
 another scoping level does not need to be opened.
 
-    Being an encrypter/decrypter, you probably want the source code to
+Being an encryptor/decryptor, you probably want the source code to
 be obfuscated, to hide the algorithm.
 
-    OBFUSCATION
+### OBFUSCATION
 
 In spite of the fact that it looks like a nice friendly hello world
 program, it isn't (as documented above). (Short lines have been padded,