One thing I love about this blog is how much I learn from your comments. Having said at the end of part 1 that I couldn’t think of any serious use for a DVL on a check box set, Michael Rocharde kindly provided this example file (Conditionals), which I am sharing with his permission.
This is one of many example files and techniques available in his new interactive e-book, FileMaker and Me, available for iPad via the iTunes store.