I remember a demonstration of Internet advertising a few years ago. We started with a group of 300 million and repeatedly filtered the group until finally landing on an audience of one, a one-armed retired endocrinologist in Olathe. TheFormTool’s Sublists will do that for you. You can divide and subdivide data until the cows come home, almost endlessly defining groups (people, roles, products, services, whatever) to include or exclude. Scott demonstrates how to select Sublists from Lists and using Linked Lists and GRIDs to select Sublists.