Hello Excel Experts: I am mystified by how I created the attached file. It is a worksheet containing the physical layout of my fruit orchard. When a cell is clicked on, a filter directly below the layout responds with rows corresponding to the position of the tree(cell). I wrote this several months ago and it works. While it is saved as an xlsm, I don't see any macros involved. I cannot figure out how it translates the cell location into the position on the list. Is there a hidden formula? If so, where is it? Thanks!