You might want to check out the following previous post: http://makeashorterlink.com/?C18F15D71

I think it provides examples of the type of things you want to do and, besides, it gave me an opportunity to try out www.makeashorterlink.com.

Art ------------------- "Jonathan Greenberg" <greenberg@ucdavis.edu> wrote in message news:B97C08F0.E72D%greenberg@ucdavis.edu... > I'm trying to write a program that performs an automated data "cleaning", > but I can't seem to find out how to loop a program (essentially a do-while > loop, where the while will be based on an output stat from the previous run) > -- is there any way to do this in SAS? > > --j >