I would like to be able to build a custom report for my physical tbr noting where I purchased the books from. To do this I would need to be able to filter out digital and audio books that I own, or create separate tags for ARCS, amazon purchases, etc. depending on the format. I don't want to do this because I ALSO would like to see all ARCS (etc.) grouped together on a different chart. I know I could in theory use multiple tags to tag the books multiple times for the grouping and the individual type charts but that makes the data look so noisy.