One little addendum to an earlier message. It may actually be false that Fractint uses IEEE math. In some modes, fractint uses 80 bit "IEEE-like" numbers. I'm not an IEEE math expert, but I'm not entirely sure that 80 bit numbers as used in an Intel Floating Point Unit are legal "IEEE" (though they are very "IEEE-like"). Fractal types in fractint that are implemented 100% in assembler use pure 80 bit floating point math. In other modes implemented primarily in C, Fractint does an odd mixture - the 64 bit double precision numbers used to implement double types are IEEE, but these are converted to 80 bits briefly when passed to the math coprocessor. In my workplace (NASA) this mixed precision behavior on the Intel platform has caused some problems we don't get on machines that use pure IEEE 64 bit doubles consistently. None of this affects my negative critique of the statement that minbrots are an artifact of IEEE math. That claim is pure unadulterated hogwash. Tim