+---------+
| cBLU    |
|         |
|    +----+
|    |cPNK|
|    |    |
+----+----+

            /-----------+
/--+        |           |
|  |<------>|           |
+--/        +-----------+
  ^
  |
  |
  |
  +-- Look here!



/----\ /----\   Color codes
|c33F| |cC02|   /-------------+-------------\
|    | |    |   |cRED RED     |cBLU BLU     |
\----/ \----/   +-------------+-------------+
                |cGRE GRE     |cPNK PNK     |
/----\ /----\   +-------------+-------------+
|c1FF| |c1AB|   |cBLK BLK     |cYEL YEL     |
|    | |    |   \-------------+-------------/
\----/ \----/

+-----+ +-----+  +-----+     | ----+  /----\  +----+   *----*
|{io} | |{s}  |  |{d}  |     |     :  |    |  :    |   |    |      /--*
|     | |     |  |     |     |     |  |    |  |{s} |   *    *      |
|     | |     |  |     |     |     v  \-=--+  +----+   |    |  -*--+
+-----+ +-----+  +-----+     |                         *----*

/-----------------\
| Things to do    |
| cGRE            |
| o Cut the grass |
| o Buy jam       |
| o Fix car       |
| o Make website  |
\-----------------/

	bullet point demo

     0   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
   |               |           | N | C | E | U | A | P | R | S | F |
   | Header Length | Reserved  | S | W | C | R | C | S | S | Y | I |
   |               |           |   | R | E | G | K | H | T | N | N |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+

   Figure 3: The new definition of bytes 13 and 14 of the TCP Header.



                  0      7 8     15 16    23 24    31
                 +--------+--------+--------+--------+
                 |     Source      |   Destination   |
                 |      Port       |      Port       |
                 +--------+--------+--------+--------+
                 |                 |                 |
                 |     Length      |    Checksum     |
                 +--------+--------+--------+--------+
                 |
                 |          data octets ...
                 +---------------- ...

                      User Datagram Header Format