Finding Optimal Cutpoints for Continuous Covariates with Time-to-Event Outcomes

I found this interesting article from MayoClinic, where they talked about a macro that finds a cut point for a continuous variable with a time to event outcome. Does anyone know where I can find this macro? Is there a macro repository that might have this macro? It is not available on the MayoClinic Website.

%findcut (ds= , time= , stat= , cutvar= , maxtime=, printop=, residop=, plottype=);

http://www.mayo.edu/research/documen...f/doc-10027230