diff --git a/learn/slides.md b/learn/slides.md
index 5000b0e..4694d19 100755
--- a/learn/slides.md
+++ b/learn/slides.md
@@ -22,7 +22,7 @@ The terms character set is used interchangably with character encoding and code
 ## Latin ##
 
 - Also called ISO-8859-1 character set.
-- This is an extension of ASCII and covers the Latin alphabet - think english looking alphabets with diacritics. eg: Àä
+- This is an extension of ASCII and covers the Latin alphabet - À,ä...
 - Number mappings upto 255.
 
 ## Windows 1252 ##
@@ -30,7 +30,6 @@ The terms character set is used interchangably with character encoding and code
 - Super set of Latin character set.
 - Introduced by Microsoft.
 
-
 ## Unicode ##
 
 - Capable of defining a mapping for 1.1 million characters.
@@ -40,7 +39,6 @@ The terms character set is used interchangably with character encoding and code
 - Emojis 😮, 🤔
 - Math ∫x.dx
 
-
 ---
 
 # Common encoding schemes #
@@ -56,9 +54,14 @@ The terms character set is used interchangably with character encoding and code
 - Today, it only accounts for 1.4% of the internet traffic.
 
 ```
-~~~enc-check -8 abcd
-
-~~~
+┌───────┬───────┬───────────┬──────┬─────┬─────┬──────────┐
+│ U+dec │ U+hex │ character │ byte │ hex │ dec │ bin      │
+├───────┼───────┼───────────┼──────┼─────┼─────┼──────────┤
+│ 97    │ 61    │ a         │ 0    │ 61  │ 97  │ 01100001 │
+│ 98    │ 62    │ b         │ 1    │ 62  │ 98  │ 01100010 │
+│ 99    │ 63    │ c         │ 2    │ 63  │ 99  │ 01100011 │
+│ 100   │ 64    │ d         │ 3    │ 64  │ 100 │ 01100100 │
+└───────┴───────┴───────────┴──────┴─────┴─────┴──────────┘
 ```
 
 ---
@@ -87,9 +90,22 @@ The terms character set is used interchangably with character encoding and code
 
 
 ```
-~~~enc-check -8 abஐह🤔
-
-~~~
+┌────────┬───────┬───────────┬──────┬─────┬─────┬──────────┐
+│ U+dec  │ U+hex │ character │ byte │ hex │ dec │ bin      │
+├────────┼───────┼───────────┼──────┼─────┼─────┼──────────┤
+│ 97     │ 61    │ a         │ 0    │ 61  │ 97  │ 01100001 │
+│ 98     │ 62    │ b         │ 1    │ 62  │ 98  │ 01100010 │
+│ 2960   │ b90   │ ஐ         │ 2    │ e0  │ 224 │ 11100000 │
+│        │       │           │ 3    │ ae  │ 174 │ 10101110 │
+│        │       │           │ 4    │ 90  │ 144 │ 10010000 │
+│ 2361   │ 939   │ ह         │ 5    │ e0  │ 224 │ 11100000 │
+│        │       │           │ 6    │ a4  │ 164 │ 10100100 │
+│        │       │           │ 7    │ b9  │ 185 │ 10111001 │
+│ 129300 │ 1f914 │ 🤔        │ 8    │ f0  │ 240 │ 11110000 │
+│        │       │           │ 9    │ 9f  │ 159 │ 10011111 │
+│        │       │           │ 10   │ a4  │ 164 │ 10100100 │
+│        │       │           │ 11   │ 94  │ 148 │ 10010100 │
+└────────┴───────┴───────────┴──────┴─────┴─────┴──────────┘
 ```
 
 ---
@@ -107,10 +123,22 @@ The terms character set is used interchangably with character encoding and code
 - 2 or 4 bytes to represent a unicode code point.
 
 ```
-~~~enc-check -6 abஐह🤔
-
-~~~
-
+┌────────┬───────┬───────────┬──────┬─────┬─────┬──────────┐
+│ U+dec  │ U+hex │ character │ byte │ hex │ dec │ bin      │
+├────────┼───────┼───────────┼──────┼─────┼─────┼──────────┤
+│ 97     │ 61    │ a         │ 0    │ 00  │ 0   │ 00000000 │
+│        │       │           │ 1    │ 61  │ 97  │ 01100001 │
+│ 98     │ 62    │ b         │ 2    │ 00  │ 0   │ 00000000 │
+│        │       │           │ 3    │ 62  │ 98  │ 01100010 │
+│ 2960   │ b90   │ ஐ         │ 4    │ 0b  │ 11  │ 00001011 │
+│        │       │           │ 5    │ 90  │ 144 │ 10010000 │
+│ 2361   │ 939   │ ह         │ 6    │ 09  │ 9   │ 00001001 │
+│        │       │           │ 7    │ 39  │ 57  │ 00111001 │
+│ 129300 │ 1f914 │ 🤔        │ 8    │ d8  │ 216 │ 11011000 │
+│        │       │           │ 9    │ 3e  │ 62  │ 00111110 │
+│        │       │           │ 10   │ dd  │ 221 │ 11011101 │
+│        │       │           │ 11   │ 14  │ 20  │ 00010100 │
+└────────┴───────┴───────────┴──────┴─────┴─────┴──────────┘
 ```
 
 ---
@@ -127,20 +155,26 @@ The terms character set is used interchangably with character encoding and code
 - Encode the string in one of the encoding schemes.
 - If a particular character cannot appear in the url string, or is not ASCII, print the hex representation of the string, prefixed with a `%`.
 
-
 ```
-~~~enc-check -8 &?
-
-~~~
+┌───────┬───────┬───────────┬──────┬─────┬─────┬──────────┐
+│ U+dec │ U+hex │ character │ byte │ hex │ dec │ bin      │
+├───────┼───────┼───────────┼──────┼─────┼─────┼──────────┤
+│ 38    │ 26    │ &         │ 0    │ 26  │ 38  │ 00100110 │
+│ 63    │ 3f    │ ?         │ 1    │ 3f  │ 63  │ 00111111 │
+└───────┴───────┴───────────┴──────┴─────┴─────┴──────────┘
 ```
 
 - For example, if the url string `p1&/pw?` were to be url-encoded under utf-8 encoding, then it would be `p1%26/pw%3f`
 
-
 ```
-~~~enc-check -6 &?
-
-~~~
+┌───────┬───────┬───────────┬──────┬─────┬─────┬──────────┐
+│ U+dec │ U+hex │ character │ byte │ hex │ dec │ bin      │
+├───────┼───────┼───────────┼──────┼─────┼─────┼──────────┤
+│ 38    │ 26    │ &         │ 0    │ 00  │ 0   │ 00000000 │
+│       │       │           │ 1    │ 26  │ 38  │ 00100110 │
+│ 63    │ 3f    │ ?         │ 2    │ 00  │ 0   │ 00000000 │
+│       │       │           │ 3    │ 3f  │ 63  │ 00111111 │
+└───────┴───────┴───────────┴──────┴─────┴─────┴──────────┘
 ```
 
 - Under utf-16 encoding, it would be `p1%00%26/pw%00%3f`
@@ -152,7 +186,6 @@ The terms character set is used interchangably with character encoding and code
 - Support Unicode code points encoded as utf-8 characters.
 - URL encode under utf-8.
 
-
 ---
 
 # What is a character? #
@@ -160,11 +193,17 @@ The terms character set is used interchangably with character encoding and code
 - It is a group of unicode code points - also called a grapheme cluster.
 - Eg: the character 'ப்' consists of 2 unicode code points as seen below.
 
-
 ```
-~~~enc-check -8 ப்
-
-~~~
+┌───────┬───────┬───────────┬──────┬─────┬─────┬──────────┐
+│ U+dec │ U+hex │ character │ byte │ hex │ dec │ bin      │
+├───────┼───────┼───────────┼──────┼─────┼─────┼──────────┤
+│ 2986  │ baa   │ ப         │ 0    │ e0  │ 224 │ 11100000 │
+│       │       │           │ 1    │ ae  │ 174 │ 10101110 │
+│       │       │           │ 2    │ aa  │ 170 │ 10101010 │
+│ 3021  │ bcd   │ ்         | 3    │ e0  │ 224 │ 11100000 │
+│       │       │           │ 4    │ af  │ 175 │ 10101111 │
+│       │       │           │ 5    │ 8d  │ 141 │ 10001101 │
+└───────┴───────┴───────────┴──────┴─────┴─────┴──────────┘
 ```
 
 - Number of characters in a string is often different from `string.Length`.
@@ -174,9 +213,14 @@ The terms character set is used interchangably with character encoding and code
 
 
 ```
-~~~enc-check -6 🤔
-
-~~~
+┌────────┬───────┬───────────┬──────┬─────┬─────┬──────────┐
+│ U+dec  │ U+hex │ character │ byte │ hex │ dec │ bin      │
+├────────┼───────┼───────────┼──────┼─────┼─────┼──────────┤
+│ 129300 │ 1f914 │ 🤔        │ 0    │ d8  │ 216 │ 11011000 │
+│        │       │           │ 1    │ 3e  │ 62  │ 00111110 │
+│        │       │           │ 2    │ dd  │ 221 │ 11011101 │
+│        │       │           │ 3    │ 14  │ 20  │ 00010100 │
+└────────┴───────┴───────────┴──────┴─────┴─────┴──────────┘
 ```
 
 - Be careful about advertising character length limitations.