"Binary" is a built-in variable type in AutoIt. But functions that deal with binary variable are inadequate. Someone says string functions can also deal with binary variable, but actually, it may cause some problem. For example, using StringInStr to search "0x11" in "0x0110" will return a false result.   This UDF solves the problem. It provide a lot of binary related functions. Furthermore, most functions in the UDF are optimized by machine code, so the speed is incredible.   Here is the fun