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So I feel like I'm grasping at straws here, but putting those numbers into an "alphanumerical" decrypter gave me this. Note the "results" part on the left - finally a use for those arrows?

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You could be onto sonething, maybe the arrows tell us what way to cipher the numbers and letters
Also, I may be wrong, but, what if, the number, refer to letters, and then we keen to go to a keyboard and get the symbols from the letters and then decode them?
For example
@/8/#)&#()333(&(#8#(_(_8#8&8&33
Also, would any if this, or the numbers, mean anything in computer code?