the symbols are made by holding down the left alt key and typing a 3didget number on the number pad to the right of the key board (it will not work using the numbers above the main keys!)
Hold down alt and type 172 and then release alt will give you � if you try it. there is a full list of the numbers and smbols below
http://www.irongeek.com/alt-numpad-ascii-key-c ombos-and-chart.html
To make the pictures and squares you just have to lay them out very carefully, it's called ascii art :)... have fun
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