Binary comma operator

Hi,

I found this page http://en.wikipedia.org/wiki/Comma_operator while reading up on the comma operator. Can anyone point out where the comma operator is being used in the sample Tortoise/Hare algorithm? I can't see it myself.

Thanks,
Alan

Third line to separate variable declarations (not as operator, as stated above)
Sixth line to separate loop increment statements (as operator)

Not a particularly instructive example I have to say.