** Using WeBWorK **

I see. I found out the name of the macro we are using is "periodicRerandomization.pl" which you can find here: http://webwork.maa.org/viewvc/npl/trunk/NationalProblemLibrary/macros/FortLewis/PeriodicRerandomization.pl?pathrev=2373&sortby=rev&view=diff&r1=2373&r2=2373&diff_format=s. I will check out the problemRandomize.pl. Thank you for all the helpful replies!