A series of numbers on the numpad that when typed while holding the ALT-key will produce a symbol not normally found on the keyboard.
Some examples of alt codes:
Alt+0215 = ×
Alt+0153 = ™
Alt+789 = §
Alt+0134 = †
Code of an extended character. You can press Alt + Code on the NumPad to input a special character.
Alt codes can be found in some referances like this http://code.knopok.net/alt-codes.html one
† Can be inputted by pressing Alt + 0134. 0134 is called an Alt Code
Special charactors obtained by holding down ALT while numlock is on, and pressing numbers on the numpad.
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