diff --git a/Cheatsheet.txt b/Cheatsheet.txt
index 90dc8e4..d274a43 100644
--- a/Cheatsheet.txt
+++ b/Cheatsheet.txt
@@ -2,23 +2,47 @@ Welcome to this plaintext file.
 This file is strictly licensed as CC0, public domain –- only this file though.
 I'm Uea-angkun "Diskette" Khunpradith (diskette@unix.in.th), the author of this file.
 This file exists because I'm a self-taught ametuer programmer and I wanted to keep notes of the things that this software does. And I do not want to use generative AI, as it does not help or teach me in anyway. It's just a cheatsheet of doing something.
+This is what Stallman would've wanted... a free software for education....
 
 Flags:
 [IDK] : Will return later and figure out how it works
-[IK] : The author seemed to have an understanding of thi
+[NSURE]: Not sure, under the assumption of guessing how it works
+[IK] : The author seemed to have an understanding of this
 [$TITLE] : the title of the file
 [WONDR] : Wonder if I can improve this...
 
+
+
+# Personal notes:
 Python's __main__ and __init__
 As far as I know, __init__ is the initialization script, just like Unix and alike's /etc/init.rc script. It's required to make it so that it's a package.
 The double underscores is for signifying that it's a global variable.
 
+
+-----START DKIM DIRECTORY-----
 [__init__]
 __init__ in this case, import the libraries required for dkim magic. And tests authres, the dkim magic library, and nacl (sodium) library for ed25519 signing.
 
-
 dkim.canonicalization is quite literally, ../dkim/canonicalization/
 
+[IDK]
+There's a variable named "sig" in which I don't know
+
+
+[arcsign.py]
+This is for ARC... we don't use that YET
+
+[arcverify.py]
+Same goes for that too
+
+
+[asn1.py]
+cryptography interface language stuff
+
+
+[asyncsupport.py]
+asynchronous support. quite literally again..
+
 
 [canonicalization.py]
 Canonicalization, in computer science is a process for converting data that has more than one possible representation into a standard "canonical" form --- thanks wikipedia, CC BY-SA 4.0
@@ -31,3 +55,28 @@ lots of regular expression codes..
 
 [WONDR]
 I wonder if I can fit my U-label convertor here...
+
+[crypto.py]
+quite literally cryptography stuff with private key and public key
+
+
+[dkimsign.py]
+this does dkim signing stuff
+
+
+[dkimverify.py]
+this does dkim verifying stuff
+
+[dknewkey.py]
+this generates a diffie-hellman private and public keys
+
+[dnsplug.py]
+this gets the DNS record
+
+[util.py]
+I'm not sure what this does yet. From the looks of it, it's just a logger and praser for tag value
+
+-----START TEST DIRECTORY-----
+
+
+-----START ROOT DIRECTORY-----
diff --git a/README.md b/README.md
index 4d838c9..e91a7f7 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,8 @@ dkimpy-smtputf8 – an RFC 8616-compliant fork of dkimpy.
 
 This fork adds support for internationalized email address (U-labels converter) and a cheatsheet note for learning
 
+NOTE: For SMTPUTF8 support, make sure you use A-label (punycoded) domain name instead. Otherwise it will not work, per RFC 8616
+
 # Original README
 
 dkimpy - DKIM (DomainKeys Identified Mail)