This function is used to return integer part contained in the string argument.
It stops reading further as soon as first invalid character is recognized.
Valid characters for this function are:
Blanks, tabs, and linefeed characters,
radix prefixes &O (for octal) and &H (for hexadecimal) and period(.)
test = Val(" 1 2 3 4") ' Returns 1234
test = Val("1 cannot be 2") 'Returns 1
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