. - output as Ascii.
, - input.
; - clear data.
& - character that the main line start with.
@<value: 0 - 9> - character that the function starts with.
: - the end of function
% - end of line
? - output as number
< - move to the left cell
> - move to the right cell
+ - add 1
- - remove 1
*<value: 0 - 9> - multiply by value
$<value: 0 - 9> - call a function